Sample records for notes api gravity

  1. Table 23. Domestic Crude Oil First Purchase Prices by API Gravity

    U.S. Energy Information Administration (EIA) Indexed Site

    Form EIA-182, "Domestic Crude Oil First Purchase Report." 23. Domestic Crude Oil First Purchase Prices by API Gravity Energy Information Administration Petroleum...

  2. Revised API Gravity ranges of EIA-182 Crude Streams

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection TechnicalResonant Soft X-RayReview/Verify Strategic Skills ReviewsAPI

  3. Costs of Imported Crude Oil by API Gravity

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    the acquisition date. See the Explanatory Notes section for additional detail. Sources: Energy Information Administration, Form FEA-F701-M-0, "Transfer Pricing Report," January...

  4. A correlation of water solubility in jet fuels with API gravity: aniline point percent aromatics, and temperature.

    E-Print Network [OSTI]

    Byington, Alonzo

    1964-01-01T23:59:59.000Z

    A CORRELATION OF WATER SOLUBILITY IN JET FUELS WITH API GRAVITY, ANILINE POINT PERCENT AROMATICS, AND TEMPERATURE A Thesis By ALONZO B YINGTON Submitted to the Graduate College of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE January, 1964 Major Subject: Petroleum Engineering A CORRELATION OF MATER SOLUBILITT IH JET FUELS WITS API GEAVITT, ANILINE POINT, PERCENT ARONATICS, AND TENPERATURE A Thesis By ALOHZO BYIHGTOH Approved...

  5. E-Print Network 3.0 - api gravity saybolt Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    (including Table 6B, "Generalized products... crude oils, refined products, and lubricating oils, contact either API or ASTM International ... Source: National Institute of...

  6. ,"Domestic Crude Oil First Purchase Prices by API Gravity"

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghurajiConventional Gasoline Sales to End Users, Total Refiner Sales Volumes" ,"ClickAPI

  7. Table 28. Percentages of Total Imported Crude Oil by API Gravity

    U.S. Energy Information Administration (EIA) Indexed Site

    the acquisition date. See the Explanatory Notes section for additional detail. Sources: Energy Information Administration, Form FEA-F701-M-0, "Transfer Pricing Report," January...

  8. Table 27. Landed Costs of Imported Crude Oil by API Gravity

    Gasoline and Diesel Fuel Update (EIA)

    the acquisition date. See the Explanatory Notes section for additional detail. Sources: Energy Information Administration, Form FEA-F701-M-0, "Transfer Pricing Report," January...

  9. Notes on several phenomenological laws of quantum gravity

    E-Print Network [OSTI]

    Jean-Philippe Bruneton

    2013-08-19T23:59:59.000Z

    Phenomenological approaches to quantum gravity try to infer model-independent laws by analyzing thought experiments and combining both quantum, relativistic, and gravitational ingredients. We first review these ingredients -three basic inequalities- and discuss their relationships with the nature of fundamental constants. In particular, we argue for a covariant mass bound conjecture: in a spacetime free of horizon, the mass inside a surface $A$ cannot exceed $16 \\pi G^2 m^2inequalities and find/review the following: (1) Any system must have a size greater than the Planck length, in the sense that there exists a minimal area (2) We comment on the Minimal Length Scenarios and the fate of Lorentz symmetry near the Planck scale (3) Quanta with transplanckian frequencies are allowed in a large enough boxes (4) There exists a mass-dependent maximal acceleration given by $m c^3/\\hbar$ if $mm_p$ (5) There exists a mass dependent maximal force and power (6) There exists a maximal energy density and pressure (7) Physical systems must obey the Holographic Principle (8) Holographic bounds can only be saturated by systems with $m>m_p$; systems lying on the ``Compton line'' $l \\sim 1/m$ are fundamental objects without substructures (9) We speculate on a new bound from above for the action. In passing, we note that the maximal acceleration is of the order of Milgrom's acceleration $a_0$ for ultra-light particles ($m\\sim H_0)$ that could be associated to the Dark Energy fluid. This suggests designing toy-models in which modified gravity in galaxies is driven by the DE field, via the maximal acceleration principle.

  10. Notes on several phenomenological laws of quantum gravity

    E-Print Network [OSTI]

    Bruneton, Jean-Philippe

    2013-01-01T23:59:59.000Z

    Phenomenological approaches to quantum gravity try to infer model-independent laws by analyzing thought experiments and combining both quantum, relativistic, and gravitational ingredients. We first review these ingredients -three basic inequalities- and discuss their relationships with the nature of fundamental constants. In particular, we argue for a covariant mass bound conjecture: in a spacetime free of horizon, the mass inside a surface $A$ cannot exceed $16 \\pi G^2 m^2m_p$ (5) There exists a mass dependent maximal force and power (6) There exists a maximal energy density and pressure (7) Physical systems must obey the Holographic Principle (8) Holographic bounds can only be saturated by systems with $m>m_p$; systems lying on the ``Compton line'' $l \\sim 1/m$ are fundamental objects without substructures (9) We speculate on a new bound from above for the action. In passing, we note that the maximal acceleration is of the order of Milgrom's acceleration $a_0$ for ultra-light particles ($m\\sim H_0)$ that co...

  11. Glossary API Gravity: An

    U.S. Energy Information Administration (EIA) Indexed Site

    Products known as No. 1, No. 2, and No. 4 diesel fuel are used in on-highway diesel engines, such as those in railroad locomotives and agricultural machinery. Products known...

  12. Glossary API Gravity: An

    U.S. Energy Information Administration (EIA) Indexed Site

    known as No. 1, No. 2, and No. 4 fuel oils are used primarily for space heating and electric power generation. 1. No. 1 Distillate: A light petroleum distillate that can be...

  13. Glossary API Gravity: An

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion2,12803 Table A1.GasYearper Thousand Cubic Feet)2.46 60 60

  14. Glossary API Gravity: An

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion2,12803 Table A1.GasYearper Thousand Cubic Feet)2.46 60 60 5

  15. Report 1: JISC Good APIs Management Report

    E-Print Network [OSTI]

    Rzepa, Henry S.

    Report 1: JISC Good APIs Management Report A review of good practice in the provision of machine) Document Name: good_api_JISC_report_v0.8.doc Notes: Acknowledgements UKOLN is funded by the MLA to all those who gave up time to help with the report. Vital to this work were the people who filled

  16. IPSJ SIG Technical Report RP2 OSCAR API API

    E-Print Network [OSTI]

    Kasahara, Hironori

    #12;IPSJ SIG Technical Report 5 OSCAR API Fig. 5 Structure of OSCAR API standard translator and DeIPSJ SIG Technical Report OSCAR API 1 1 1 1 1 1 OSCAR SH4A 8 RP2 OSCAR API API RP2 8 SPEC CPU 2000 ART 1.16 1. 64 80 1 [7][8] , [9] 1 1 Waseda Universoty [10] OSCAR [1] [5] RP-2 [6] OSCAR OSCAR API[2

  17. Web Service Interface (API)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    OSCARS and Future Tech OSCARS Standard and Open Grid Forum OSCARS Developers Community Web Browser Interface (WBUI) Web Service Interface (API) Read More... Fasterdata IPv6...

  18. Original article Reproductive isolation of Apis nuluensis

    E-Print Network [OSTI]

    Paris-Sud XI, Universitť de

    , drones of Apis mellifera (Rutt- ner and Ruttner, 1965), Apis cerana (Ruttner, 1973, Punchihewa et al

  19. A note on a gauge-gravity relation and functional determinants

    E-Print Network [OSTI]

    R Aros; D E Diaz; A Montecinos

    2010-04-08T23:59:59.000Z

    We present a refinement of a recently found gauge-gravity relation between one-loop effective actions: on the gauge side, for a massive charged scalar in 2d dimensions in a constant maximally symmetric electromagnetic field; on the gravity side, for a massive spinor in d-dimensional (Euclidean) anti-de Sitter space. The inclusion of the dimensionally regularized volume of AdS leads to complete mapping within dimensional regularization. In even-dimensional AdS, we get a small correction to the original proposal; whereas in odd-dimensional AdS, the mapping is totally new and subtle, with the `holographic trace anomaly' playing a crucial role.

  20. Practical API Protocol Checking with Access Permissions

    E-Print Network [OSTI]

    for a large Java standard API with our approach. We also specify several other Java APIs and identify standard APIs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4.2 ProtocolPractical API Protocol Checking with Access Permissions Kevin Bierhoff Nels E. Beckman Jonathan

  1. Note on the phase space of asymptotically flat gravity in Ashtekar-Barbero variables

    E-Print Network [OSTI]

    Miguel Campiglia

    2014-12-17T23:59:59.000Z

    We describe the canonical phase space of asymptotically flat gravity in Ashtekar-Barbero variables. We show that the Gauss constraint multiplier must fall off slower than previously considered in order to recover ADM phase space. The generators of the asymptotic Poincare group are derived within the Ashtekar-Barbero phase space without reference to the ADM generators. The resulting expressions are shown to agree, modulo Gauss constraint terms, with those obtained from the ADM generators. A payoff of this procedure is a new expression for the generator of asymptotic rotations which is polynomial in the triad and hence better suited for quantum theory. Our treatment complements earlier description by Thiemann in the context of self-dual variables.

  2. api filter press: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Websites Summary: WASEDA UNIVERSITY Press Release --IT 12 3 *1 *2 OSCAR API ver. 2.0 OSCAR API C Fortran OSCAR -- API OSCAR API ver. 2.0 API API 2012 4 25 http:...

  3. Associated particle imaging (API)

    SciTech Connect (OSTI)

    NONE

    1998-05-01T23:59:59.000Z

    Associated Particle Imaging (API) is an active neutron probe technique that provides a 3-D image with elemental composition of the material under interrogation, and so occupies a unique niche in the interrogation of unknown objects. The highly penetrating nature of neutrons enables API to provide detailed information about targets of interest that are hidden from view. Due to the isotropic nature of the induced reactions, radiation detectors can be set on the same side of the object as the neutron source, so that the object can be interrogated from a single side. At the heat of the system is a small generator that produces a continuous, monoenergetic flux of neutrons. By measuring the trajectory of coincident alpha particles that are produced as part of the process, the trajectory of the neutron can be inferred. Interactions between a neutron and the material in its path often produce a gamma ray whose energy is characteristic of that material. When the gamma ray is detected, its energy is measured and combined with the trajectory information to produce a 3-D image of the composition of the object being interrogated. During the course of API development, a number of improvements have been made. A new, more rugged sealed Tube Neutron Generator (STNG) has been designed and fabricated that is less susceptible to radiation damage and better able to withstand the rigors of fielding than earlier designs. A specialized high-voltage power supply for the STNG has also been designed and built. A complete package of software has been written for the tasks of system calibration, diagnostics and data acquisition and analysis. A portable system has been built and field tested, proving that API can be taken out of the lab and into real-world situations, and that its performance in the field is equal to that in the lab.

  4. Validation and Interactivity of Web API Documentation

    E-Print Network [OSTI]

    Jeffrey, Alan

    of APIs in the directory and shows that REST1 [3] is in the majority and is growing faster than any other validation. 1ProgrammableWeb API styles are self-reported by the API owners, and APIs reported as RESTful mayValidation and Interactivity of Web API Documentation Peter J. Danielsen and Alan Jeffrey Bell Labs

  5. Improving API Documentation Using API Usage Information Jeffrey Stylos, Andrew Faulring, Zizhuang Yang, Brad A. Myers

    E-Print Network [OSTI]

    Matsuda, Noboru

    than with standard Javadoc. 1. Introduction An Application Programming Interface (API) is the userImproving API Documentation Using API Usage Information Jeffrey Stylos, Andrew Faulring, Zizhuang://www.cs.cmu.edu/~jadeite Abstract Jadeite is a new Javadoc-like API documentation system that takes advantage of multiple users

  6. API Blender: A Uniform Interface to Social Platform APIs Georges Gouriten

    E-Print Network [OSTI]

    Senellart, Pierre

    Web, API, REST, data integration 1. INTRODUCTION Interacting with platforms like Facebook, YoutubeAPI Blender: A Uniform Interface to Social Platform APIs Georges Gouriten Institut Télécom; Télécom one social Web platform, which implies studying the related API specifications. These are often only

  7. CIT 2011 2554! Facebook API

    E-Print Network [OSTI]

    Runapongsa, Kanda

    ! ! ! ! ! ! ! ! ! CIT 2011 2554! ! 1 #12; 2 #12; 3 #12; Facebook API/3) ! 24 #12; (1/2) ! 25 #12; (2/2) ! 26 #12; Facebook Query Language (FQL) FQL SQL FQL to Facebook 8th IEEE International Conference on Automatic Face & Gesture Recognition, 2008 (FG '08). H [10

  8. OSCAR API for Low-Power Multicores and Manycores,

    E-Print Network [OSTI]

    Kasahara, Hironori

    OSCAR API for Low-Power Multicores and Manycores, and API Standard Translator Keiji Kimura;Current Application Development Environment for Multicores 3 } Parallel API } pthread (SMP) } Old thread } Message Passing API } NO Good API for Low-Power and Real-time Multicores! } Parallelizing Compilers

  9. Collaboration Topics - Acceleration Hardware and APIs | National...

    National Nuclear Security Administration (NNSA)

    Simulation and Computing and Institutional R&D Programs NNSACEA Cooperation in Computer Science Collaboration Topics - Acceleration Hardware and APIs Collaboration Topics...

  10. APIs | OpenEI Community

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2,AUDITCaliforniaWeifangwiki Home Jweers'sAIRMaster+APFED-GoodAPIs Home

  11. Computer Science MAPO: Mining API Usages from

    E-Print Network [OSTI]

    Xie, Tao

    Computer Science MAPO: Mining API Usages from Open Source Repositories Tao Xie Department of Computer Science North Carolina State University, USA Jian Pei Department of Computer Science Simon Fraser University, Canada ·http://ase.csc.ncsu.edu/ #12;Computer Science Learning API Usages is Challenging ·org

  12. Towards a Protocol-Independent Internet Transport API

    E-Print Network [OSTI]

    Welzl, Michael

    a standardized API yet, and at the time of writing, the most recent Internet-draft specifying the SCTP API [1Towards a Protocol-Independent Internet Transport API Michael Welzl University of Oslo Email Gjessing University of Oslo Email: steing@ifi.uio.no Abstract--The conjoint API of TCP, UDP, UDP-Lite, SCTP

  13. The Design of a Group Key Agreement API Giuseppe Ateniese

    E-Print Network [OSTI]

    Kim, Dae-Shik

    and communication-independent API. The rest of this paper is organized as follows. We be- gin with the notationThe Design of a Group Key Agreement API Giuseppe Ateniese Computer Science Department Johns Hopkins describes a protocol suite and an API geared for securing collab- orative applications. The API is based

  14. The JANA Calibrations and Conditions Database API

    SciTech Connect (OSTI)

    David Lawrence

    2010-07-01T23:59:59.000Z

    Calibrations and conditions databases can be accessed from within the JANA Event Processing framework through the API defined in its JCalibration base class. The API is designed to support everything from databases, to web services to flat files for the backend. A Web Service backend using the gSOAP toolkit has been implemented which is particularly interesting since it addresses many modern cybersecurity issues including support for SSL. The API allows constants to be retrieved through a single line of C++ code with most of the context, including the transport mechanism, being implied by the run currently being analyzed and the environment relieving developers from implementing such details.

  15. Landed Costs of Imported Crude by API Gravity

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40 Buildingto China (Million Cubic Feet) 3 0 0 0 156 57 61 76 673 12 12 9

  16. Costs of Imported Crude Oil by API Gravity

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion2,128 2,469Decade Year-0 Year-1 Year-2 Year-3ThousandYear Jan

  17. Costs of Imported Crude Oil by API Gravity

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion2,128 2,469Decade Year-0 Year-1 Year-2 Year-3ThousandYear Jan

  18. Costs of Imported Crude Oil by API Gravity

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion2,128 2,469Decade Year-0 Year-1 Year-2 Year-3ThousandYear Jan

  19. Costs of Imported Crude Oil by API Gravity

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion2,128 2,469Decade Year-0 Year-1 Year-2 Year-3ThousandYear Jan

  20. Costs of Imported Crude Oil by API Gravity

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion2,128 2,469Decade Year-0 Year-1 Year-2 Year-3ThousandYear Jan

  1. Domestic Crude Oil First Purchase Prices by API Gravity

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion2,128 2,469Decade Year-0CubicCubic Feet)Cubic--2,8190 02009

  2. Domestic Crude Oil First Purchase Prices by API Gravity

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40 Buildingto17 3400, U.S. DEPARTMENTshort05) Energy R*yDistributedand

  3. Landed Costs of Imported Crude by API Gravity

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40 Buildingto17 3400, U.S.MajorMarketsNov-14 Dec-14Has|Issues LBOE

  4. Landed Costs of Imported Crude by API Gravity

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40 Buildingto17 3400, U.S.MajorMarketsNov-14 Dec-14Has|Issues LBOEValues shown

  5. Percentages of Total Imported Crude Oil by API Gravity

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro IndustriesTownDells,1Stocks Nov-14 Dec-14 Jan-15LiquidBGOperablePERCENTthe

  6. Percentages of Total Imported Crude Oil by API Gravity

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5 Tables July 1996 Energy Information Administration Office ofthroughYear Jan Feb Mar AprYear JanPricePrice (Percent)by

  7. Canonical Analysis of Unimodular Gravity

    E-Print Network [OSTI]

    J. Kluson

    2014-10-07T23:59:59.000Z

    This short note is devoted to the Hamiltonian analysis of the Unimodular Gravity.We treat the unimodular gravity as General Relativity action with the unimodular constraint imposed with the help of Lagrange multiplier. We perform the canonical analysis of the resulting theory and determine its constraint structure.

  8. REVIEW ARTICLE Standard methods for maintaining adult Apis mellifera

    E-Print Network [OSTI]

    Shutler, Dave

    REVIEW ARTICLE Standard methods for maintaining adult Apis mellifera in cages under in vitro Research Unit (CRA-API), Bologna, Italy. 5 Institute for Wildlife Conservation, Szent IstvŠn University

  9. OpenMP: An API for Writing Portable SMP Application

    E-Print Network [OSTI]

    Standards for parallel programming l Thread Libraries ≠ Win32 API - a low level approach. ≠ threadsOpenMP: An API for Writing Portable SMP Application Software Tim Mattson Intel Corporation

  10. Standardization of an API for Distributed Resource Management Peter Troger

    E-Print Network [OSTI]

    Weske, Mathias

    Standardization of an API for Distributed Resource Management Systems Peter Tr®oger Hasso concepts of the finalized API, and explain is- sues and findings with the standardization Management Application API (DRMAA) specification is a software standard de- veloped in the Open Grid Forum

  11. REVIEW ARTICLE Standard methods for pollination research with Apis

    E-Print Network [OSTI]

    Delaplane, Keith S.

    REVIEW ARTICLE Standard methods for pollination research with Apis mellifera Keith S Delaplane1) The COLOSS BEEBOOK, Volume I: standard methods for Apis mellifera research. Journal of Apicultural Research polinizaciůn con Apis mellifera Resumen En este capŪtulo se presenta una sŪntesis de las recomendaciones para

  12. REST Web Service Maintenance Through API Policy Enforcement

    E-Print Network [OSTI]

    California at Santa Barbara, University of

    1 REST Web Service Maintenance Through API Policy Enforcement Hiranya Jayathilaka, Chandra Krintz 100% annual growth rate [2]. These APIs increasingly employ the REST (Representational State Transfer accessible to users via web application programming interfaces (web APIs) and cloud-based deployment

  13. Towards a Common API for Structured PeertoPeer Overlays #

    E-Print Network [OSTI]

    and abstracted, can be added to the common APIs over time. The rest of this paper is organized as followsTowards a Common API for Structured Peer­to­Peer Overlays # Frank Dabek 1 , Ben Zhao 2 , Peter an ongoing effort to define common APIs for structured peer­to­peer overlays and the key abstractions

  14. The honey bees of Ethiopia represent a new subspecies of Apis mellifera--Apis mellifera simensis n. ssp.

    E-Print Network [OSTI]

    The honey bees of Ethiopia represent a new subspecies of Apis mellifera--Apis mellifera simensis n bees endemic to the volcanic dome system of Ethiopia are described as a new subspecies, Apis mellifera this population. There is no indication for the presence of more than one subspecies of honey bee in Ethiopia

  15. Ground Gravity Survey At Valles Caldera - Sulphur Springs Geothermal...

    Open Energy Info (EERE)

    Survey Activity Date - 1986 Usefulness not indicated DOE-funding Unknown Notes A computer program capable of two-dimensional modeling of gravity data was used in interpreting...

  16. Ground Gravity Survey At San Francisco Volcanic Field Area (Warpinski...

    Open Energy Info (EERE)

    Exploration Technique Ground Gravity Survey Activity Date Usefulness not indicated DOE-funding Unknown Notes Northern Arizona University has re-assessed the existing exploration...

  17. Ground Gravity Survey At Dixie Valley Geothermal Area (Allis...

    Open Energy Info (EERE)

    DOE-funding Unknown Exploration Basis Gravity surveys were conducted to monitor the evolution of the geothermal reservoir. Notes A 12 month long experiment was conducted using a...

  18. Aspect-Oriented Generation of the API Documentation for Michihiro Horie

    E-Print Network [OSTI]

    Chiba, Shigeru

    for writing the API documentation is standardized; the docu- mentation must be surroundedAspect-Oriented Generation of the API Documentation for AspectJ Michihiro Horie Tokyo Institute on application programming interface (API) is essential. The document on the API, which we call the API

  19. apis mellifera workers: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    The effect of Apis mellifera carnica Polm worker bee source for populating mating of Croatia (Received 9 December 1991; accepted 18 March 1992) Summary The influence of worker...

  20. apis mellifera populations: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    The effect of Apis mellifera carnica Polm worker bee source for populating mating of Croatia (Received 9 December 1991; accepted 18 March 1992) Summary The influence of worker...

  1. api x80 pipeline: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    C Fortran API 3. c 1959 Information Processing Society of Japan 3 Kasahara, Hironori 9 Hydrogen Pipeline Material Testing We provide critical data, measurement methods and...

  2. The Flight Physiology of Reproductives of Africanized, European, and Hybrid Honeybees (Apis mellifera)

    E-Print Network [OSTI]

    Harrison, Jon F.; Taylor, Orley R.

    2005-02-25T23:59:59.000Z

    Neotropical African honeybees (Apis mellifera scutellata), in the process of spreading throughout tropical and subtropical regions of the Americas, hybridize with and mostly replace European honeybees (primarily Apis mellifera mellifera and Apis...

  3. Gravity, Dimension, Equilibrium, & Thermodynamics

    E-Print Network [OSTI]

    Jerome Perez

    2006-03-30T23:59:59.000Z

    Is it actually possible to interpret gravitation as space's property in a pure classical way. Then, we note that extended self-gravitating system equilibrium depends directly on the number of dimension of the space in which it evolves. Given those precisions, we review the principal thermodynamical knowledge in the context of classical gravity with arbitrary dimension of space. Stability analyses for bounded 3D systems, namely the Antonov instability paradigm, are then rapproched to some amazing properties of globular clusters and galaxies.

  4. Api Nova Energia Srl | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof EnergyInnovation in Carbon Capture and SequestrationAnemoiAnokaApi Nova Energia Srl

  5. Automatically Generating Refactorings to Support API Jeff H. Perkins

    E-Print Network [OSTI]

    refactorings to be automati≠ cally generated for the most common types of library API changes, without any MA USA jhp@csail.mit.edu Abstract When library APIs change, client code should change in response. This approach has several benefits. It requires no change in library development practice, since programmers

  6. Automatically Generating Refactorings to Support API Jeff H. Perkins

    E-Print Network [OSTI]

    to be automati- cally generated for the most common types of library API changes, without any extra work MA USA jhp@csail.mit.edu Abstract When library APIs change, client code should change in response. This approach has several benefits. It requires no change in library development practice, since programmers

  7. OSCAR API v2.1 with Flexible Accelerator Control Facilities

    E-Print Network [OSTI]

    Kasahara, Hironori

    Kimura #12;Application Development Environment with OSCAR Compiler, OSCAR API and API Standard TranslatorOSCAR API v2.1 with Flexible Accelerator Control Facilities Keiji Kimura, Waseda University 13. The execution timing of them can be notified by FlagVariables Overview of OSCAR API v2.0 (before 2

  8. Restricting information flow in security APIs via typing†

    E-Print Network [OSTI]

    Keighren, Gavin

    2014-06-27T23:59:59.000Z

    Security APIs are designed to enable the storage and processing of confidential data without that data becoming known to individuals who are not permitted to obtain it, and are central to the operation of Automated Teller ...

  9. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Energy I I' a(STEO)U.S. Coal Stocks atDistillateGulfExportsAPI Gravity

  10. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Energy I I' a(STEO)U.S. CoalInputs &Futures PricesAPI Gravity

  11. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Energy I I' a(STEO)U.S. CoalInputs &Futures PricesAPI GravityArea

  12. Quantum theory of gravitational collapse (lecture notes on quantum conchology)

    E-Print Network [OSTI]

    Petr Hajicek

    2002-04-15T23:59:59.000Z

    Preliminary version No.~2 of the lecture notes for the talk ``Quantum theory of gravitational collapse'' given at the 271. WE-Heraeus-Seminar ``Aspects of Quantum Gravity'' at Bad Honnef, 25 February--1 March 2002

  13. Blue Note

    ScienceCinema (OSTI)

    Murray Gibson

    2010-01-08T23:59:59.000Z

    Argonne's Murray Gibson is a physicist whose life's work includes finding patterns among atoms. The love of distinguishing patterns also drives Gibson as a musician and Blues enthusiast."Blue" notes are very harmonic notes that are missing from the equal temperament scale.The techniques of piano blues and jazz represent the melding of African and Western music into something totally new and exciting.

  14. Blue Note

    SciTech Connect (OSTI)

    Murray Gibson

    2007-04-27T23:59:59.000Z

    Argonne's Murray Gibson is a physicist whose life's work includes finding patterns among atoms. The love of distinguishing patterns also drives Gibson as a musician and Blues enthusiast."Blue" notes are very harmonic notes that are missing from the equal temperament scale.The techniques of piano blues and jazz represent the melding of African and Western music into something totally new and exciting.

  15. Ground Gravity Survey At Neal Hot Springs Geothermal Area (U...

    Open Energy Info (EERE)

    Hot Springs. Data from these surveys will be integrated with older data from Chevron Minerals 1979 drill hole. Notes The gravity survey covered an area of approximately 34 km2...

  16. Ground Gravity Survey At Mt Princeton Hot Springs Geothermal...

    Open Energy Info (EERE)

    Notes Gravity low associated with Mt. Princeton Batholith; density contrast of -0.5 gcm3 of valley-fill sediments relative to batholith References J.E. Case, R.F. Sikora...

  17. Computers & Graphics 29 (2005) 315 Multimedia integration into the blue-c API

    E-Print Network [OSTI]

    Staadt, Oliver

    Computers & Graphics 29 (2005) 3­15 Multimedia integration into the blue-c API Martin Naefa In this article, we present the blue-c application programming interface (API) and discuss some of its performance characteristics. The blue-c API is a software toolkit for media-rich, collaborative, immersive virtual reality

  18. Discovering Math APIs by Mining Unit Tests Anirudh Santhiar, Omesh Pandita

    E-Print Network [OSTI]

    Kanade, Aditya

    APIs for mathematical computations by mining unit tests of API meth- ods. Given a math expression, MathFinder synthesizes pseudo-code to compute the expression by mapping its subexpressions to API method calls. For each- putations. Mathematical computations are at the heart of numerous application domains such as statistics

  19. Usage Patterns of the Java Standard API Homan Ma, Robert Amor, Ewan Tempero

    E-Print Network [OSTI]

    Amor, Robert

    Usage Patterns of the Java Standard API Homan Ma, Robert Amor, Ewan Tempero Department of Computer,ewan}@cs.auckland.ac.nz Abstract The Java Standard API has grown enormously since Java's be- ginnings, now consisting of over 3 to help determine the "typical" usage of the Standard API. We find that, in an extensive corpus of open

  20. Visualizing the Size of the Java Standard API Craig Anslow, James Noble,

    E-Print Network [OSTI]

    Anslow, Craig

    Visualizing the Size of the Java Standard API Craig Anslow, James Noble, Stuart Marshall School@cs.auckland.ac.nz ABSTRACT The design of software should be made up of small packages and classes. The Java Standard API, and nearly 50,000 methods. We have con- ducted visual software analysis on the Java Standard API using

  1. Towards Automatically Estimating Porting Effort Between Web Service APIs Hiranya Jayathilaka, Chandra Krintz, Rich Wolski

    E-Print Network [OSTI]

    Bigelow, Stephen

    Towards Automatically Estimating Porting Effort Between Web Service APIs Hiranya Jayathilaka for a programmer to port an application from one web API to another, i.e. "porting effort". Our approach defines approach using both randomly generated and real-world web APIs and show that our metric can correctly

  2. Web API Growing Pains: Stories from Client Developers and Their Code

    E-Print Network [OSTI]

    Zaidman, Andy

    APIs make use of REST interfaces which can be easily integrated with through a single HTTP requestWeb API Growing Pains: Stories from Client Developers and Their Code Tiago Espinha, Andy Zaidman.g.gross}@tudelft.nl Abstract--Web APIs provide a systematic and extensible approach for application-to-application interaction

  3. A MOBILE APPLICATION ACCESSING PATIENTS' HEALTH RECORDS THROUGH A REST API

    E-Print Network [OSTI]

    Andry, François

    A MOBILE APPLICATION ACCESSING PATIENTS' HEALTH RECORDS THROUGH A REST API How REST, dnicholson}@axolotl.com Keywords: Mobile Application, Health Records, RHIO, Lab Results, HL7, REST API, Web we present the motivations and technical choices for creating a REST API integrated with a mobile

  4. RDF-REST: A Unifying Framework for Web APIs and Linked Data

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    RDF-REST: A Unifying Framework for Web APIs and Linked Data Pierre-Antoine Champin LIRIS of efforts to bridge the gap between web APIs and linked data. The RDF-REST framework, that we developed adopted in the RDF-REST framework, and show its benefits in the design and use of web APIs. One

  5. Towards a Common API for Structured Peer-to-Peer Overlays

    E-Print Network [OSTI]

    and abstracted, can be added to the common APIs over time. The rest of this paper is organized as followsTowards a Common API for Structured Peer-to-Peer Overlays Frank Dabek1 , Ben Zhao2 , Peter Druschel an ongoing effort to define common APIs for structured peer-to-peer overlays and the key abstractions

  6. Indexing the Java API Using Source Code Homan Ma, Robert Amor, Ewan Tempero

    E-Print Network [OSTI]

    Amor, Robert

    Standard API. The rest of this paper is organised as follows. In the next section, we discuss related workIndexing the Java API Using Source Code Homan Ma, Robert Amor, Ewan Tempero Department of Computer code as the basis for the index. Keywords: Java Standard API, Software Repositories, Source Code

  7. Mining API Error-Handling Specifications from Source Code

    E-Print Network [OSTI]

    Xie, Tao

    Mining API Error-Handling Specifications from Source Code Mithun Acharya and Tao Xie Department it difficult to mine error-handling specifications through manual inspection of source code. In this paper, we, without any user in- put. In our framework, we adapt a trace generation technique to distinguish

  8. TOPCAT Plotting from STILTS API and Command Line

    E-Print Network [OSTI]

    Taylor, Mark

    TOPCAT Plotting from STILTS API and Command Line Mark Taylor, University of Bristol, UK your own Java application code, or from the STILTS command-line interface. Plot Model Each plot The STILTS package provides access to TOPCAT functions from the command line or a Jython front end. New

  9. Original article Drone congregation of Apis cerana japonica

    E-Print Network [OSTI]

    Boyer, Edmond

    Honeybee, Wakazono-chyo 3-10, Morioka 020; 2Laboratory of Applied Entomology, Faculty of Agriculture, Iwate honeybees, Apis mellifera L, have been found at sites above open ground and often in areas of depression for DCAs remains unknown and we have no information how honeybee drones congregate at the same site

  10. 2011 Growth API School Report -Preuss School UCSD http://api.cde.ca.gov/Acnt2011/2011GrowthSch.aspx?allcds=37683383731189[9/30/2011 3:51:13 PM

    E-Print Network [OSTI]

    Russell, Lynn

    between 11 and 99 valid Standardized Testing and Reporting (STAR) Program test scores included in the API2011 Growth API School Report - Preuss School UCSD http://api.cde.ca.gov/Acnt2011/2011GrowthSch.aspx?allcds=37683383731189[9/30/2011 3:51:13 PM] DataQuest home > API home > Reports > Select School > School Reports

  11. Is nonrelativistic gravity possible?

    SciTech Connect (OSTI)

    Kocharyan, A. A. [School of Mathematical Sciences, Monash University, Clayton 3800 (Australia)

    2009-07-15T23:59:59.000Z

    We study nonrelativistic gravity using the Hamiltonian formalism. For the dynamics of general relativity (relativistic gravity) the formalism is well known and called the Arnowitt-Deser-Misner (ADM) formalism. We show that if the lapse function is constrained correctly, then nonrelativistic gravity is described by a consistent Hamiltonian system. Surprisingly, nonrelativistic gravity can have solutions identical to relativistic gravity ones. In particular, (anti-)de Sitter black holes of Einstein gravity and IR limit of Horava gravity are locally identical.

  12. Stochastic Gravity

    E-Print Network [OSTI]

    B. L. Hu

    1999-02-22T23:59:59.000Z

    We give a summary of the status of current research in stochastic semiclassical gravity and suggest directions for further investigations. This theory generalizes the semiclassical Einstein equation to an Einstein-Langevin equation with a stochastic source term arising from the fluctuations of the energy-momentum tensor of quantum fields. We mention recent efforts in applying this theory to the study of black hole fluctuations and backreaction problems, linear response of hot flat space, and structure formation in inflationary cosmology. To explore the physical meaning and implications of this stochastic regime in relation to both classical and quantum gravity, we find it useful to take the view that semiclassical gravity is mesoscopic physics and that general relativity is the hydrodynamic limit of certain spacetime quantum substructures. Three basic issues - stochasticity, collectivity, correlations- and three processes - dissipation, fluctuations, decoherence- underscore the transformation from quantum micro structure and interaction to the emergence of classical macro structure and dynamics. We discuss ways to probe into the high energy activity from below and make two suggestions: via effective field theory and the correlation hierarchy. We discuss how stochastic behavior at low energy in an effective theory and how correlation noise associated with coarse-grained higher correlation functions in an interacting quantum field could carry nontrivial information about the high energy sector. Finally we describe processes deemed important at the Planck scale, including tunneling and pair creation, wave scattering in random geometry, growth of fluctuations and forms, Planck scale resonance states, and spacetime foams.

  13. Table 23. Domestic Crude Oil First Purchase Prices by API Gravity

    U.S. Energy Information Administration (EIA) Indexed Site

    data reported. Source: Energy Information Administration, Form EIA-182, "Domestic Crude Oil First Purchase Report." Energy Information Administration Petroleum Marketing Annual...

  14. Table 23. Domestic Crude Oil First Purchase Prices by API Gravity

    U.S. Energy Information Administration (EIA) Indexed Site

    12.17 12.80 Source: Energy Information Administration, Form EIA-182, "Domestic Crude Oil First Purchase Report." Energy Information AdministrationPetroleum Marketing Annual...

  15. Table 23. Domestic Crude Oil First Purchase Prices by API Gravity

    U.S. Energy Information Administration (EIA) Indexed Site

    17.18 17.64 Source: Energy Information Administration, Form EIA-182, "Domestic Crude Oil First Purchase Report." Energy Information AdministrationPetroleum Marketing Annual...

  16. Table 23. Domestic Crude Oil First Purchase Prices by API Gravity

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122Commercial ConsumersThousandCubic Feet) DecadeV49 155 181 1773 January1998,

  17. Table 23. Domestic Crude Oil First Purchase Prices by API Gravity

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122Commercial ConsumersThousandCubic Feet) DecadeV49 155 181 1773 January1998,

  18. Table 23. Domestic Crude Oil First Purchase Prices by API Gravity

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122Commercial ConsumersThousandCubic Feet) DecadeV49 155 181 1773 January1998,

  19. Table 23. Domestic Crude Oil First Purchase Prices by API Gravity

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122Commercial ConsumersThousandCubic Feet) DecadeV49 155 181 1773 January1998, 1996

  20. Table 23. Domestic Crude Oil First Purchase Prices by API Gravity

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122Commercial ConsumersThousandCubic Feet) DecadeV49 155 181 1773 January1998, 1996

  1. Table 27. Landed Costs of Imported Crude Oil by API Gravity

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122Commercial ConsumersThousandCubic Feet) DecadeV49 155 181 1773 January1998, 1994

  2. Table 27. Landed Costs of Imported Crude Oil by API Gravity

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122Commercial ConsumersThousandCubic Feet) DecadeV49 155 181 1773 January1998, 1994

  3. Table 27. Landed Costs of Imported Crude Oil by API Gravity

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122Commercial ConsumersThousandCubic Feet) DecadeV49 155 181 1773 January1998, 1994

  4. Table 27. Landed Costs of Imported Crude Oil by API Gravity

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122Commercial ConsumersThousandCubic Feet) DecadeV49 155 181 1773 January1998, 1994

  5. Table 27. Landed Costs of Imported Crude Oil by API Gravity

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122Commercial ConsumersThousandCubic Feet) DecadeV49 155 181 1773 January1998, 1994

  6. Table 28. Percentages of Total Imported Crude Oil by API Gravity

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122Commercial ConsumersThousandCubic Feet) DecadeV49 155 181 1773 January1998, 1994

  7. Table 28. Percentages of Total Imported Crude Oil by API Gravity

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122Commercial ConsumersThousandCubic Feet) DecadeV49 155 181 1773 January1998, 1994

  8. Table 28. Percentages of Total Imported Crude Oil by API Gravity

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122Commercial ConsumersThousandCubic Feet) DecadeV49 155 181 1773 January1998, 1994

  9. Table 28. Percentages of Total Imported Crude Oil by API Gravity

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122Commercial ConsumersThousandCubic Feet) DecadeV49 155 181 1773 January1998, 1994

  10. Table 28. Percentages of Total Imported Crude Oil by API Gravity

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122Commercial ConsumersThousandCubic Feet) DecadeV49 155 181 1773 January1998, 1994

  11. F.O.B. Costs of Imported Crude Oil by API Gravity

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion2,12803 Table A1. Refiner/Reseller MotorImports1Explanatory4444

  12. F.O.B. Costs of Imported Crude Oil by API Gravity

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40 Buildingto17 3400, U.S.MajorMarkets EnergyConsumption5 15EnvironmentalErin

  13. F.O.B. Costs of Imported Crude Oil by API Gravity

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40 Buildingto17 3400, U.S.MajorMarkets EnergyConsumption5

  14. OTS NOTE

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling7 AugustAFRICAN .METALS~ c3 Alexander941 OTS NOTE

  15. Quantum Field Theory & Gravity

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Quantum Field Theory & Gravity Quantum Field Theory & Gravity Understanding discoveries at the Energy, Intensity, and Cosmic Frontiers Get Expertise Rajan Gupta (505) 667-7664...

  16. Negative mass solitons in gravity

    SciTech Connect (OSTI)

    Cebeci, Hakan; Sarioglu, Oezguer; Tekin, Bayram [Anadolu University, Department of Physics, Yunus Emre Campus, 26470, Eskisehir (Turkey); Department of Physics, Faculty of Arts and Sciences, Middle East Technical University, 06531, Ankara (Turkey)

    2006-03-15T23:59:59.000Z

    We first reconstruct the conserved (Abbott-Deser) charges in the spin-connection formalism of gravity for asymptotically (Anti)-de Sitter spaces, and then compute the masses of the AdS soliton and the recently found Eguchi-Hanson solitons in generic odd dimensions, unlike the previous result obtained for only five dimensions. These solutions have negative masses compared to the global AdS or AdS/Z{sub p} spacetimes. As a separate note, we also compute the masses of the recent even dimensional Taub-NUT-Reissner-Nordstroem metrics.

  17. OpenEI API listing | OpenEI Community

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup |JilinLuOpenNorthOlympia Green Fuels JumpData+entrepreneur HomeAPI

  18. OpenEI API. Implementation help | OpenEI Community

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer PlantMunhall,Missouri: EnergyExcellenceOfficeOhio: Energy Resourcesen) OpenOpenBarterAPI.

  19. Asset Score API Webinar June 14, 2013 | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: The FutureComments from Tarasa U.S.LLC |AquionMr.August ContractDepartmentP r eAPI

  20. Energy API and dataset overview | OpenEI Community

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualPropertyd8c-a9ae-f8521cbb8489 No revision| OpenElectromagneticElmwoodEnerSpectivesolarAPI and

  1. How Do Developers React to API Deprecation? The Case of a Smalltalk Ecosystem

    E-Print Network [OSTI]

    Nierstrasz, Oscar

    How Do Developers React to API Deprecation? The Case of a Smalltalk Ecosystem Romain Robbes PLEIAD extent and impact of these API changes in practice, on an entire software ecosystem associated effects across an entire ecosystem. Our case study subject is the development community gravitating around

  2. Data Management in the GridRPC GridRPC Data Management API

    E-Print Network [OSTI]

    Caniou, Yves

    Data Management in the GridRPC Issues Conclusion GridRPC Data Management API Implementations, Le Mahec, Nakada GridRPC DM API: Implem. and Interop. Issues (1/13) #12;Data Management in the GridRPC Issues Conclusion Goal GridRPC DM types: Reminder 1 Data Management in the GridRPC Goal GridRPC DM types

  3. Automated Analysis of Security-Critical JavaScript APIs Stanford University

    E-Print Network [OSTI]

    Pratt, Vaughan

    Automated Analysis of Security-Critical JavaScript APIs Ankur Taly Stanford University ataly. The trusted portion of each application may then expose an API to untrusted code, interposing a reference define the semantics of a restricted version of JavaScript devised by the ECMA Standards committee

  4. Impedantix: An API for Native XML Data Stores M. Brantner1

    E-Print Network [OSTI]

    Mannheim, Universitšt

    Impedantix: An API for Native XML Data Stores A. Bhm1 M. Brantner1 S. Helmer2 A. Hollmann1 C Database systems have to provide powerful Application Program- ming Interfaces (APIs) to facilitate the convenient development of data-intensive applications. While de-facto standards such as ODBC and JDBC have

  5. A RESTful API for exchanging Materials Data in the AFLOWLIB.org consortium

    E-Print Network [OSTI]

    Curtarolo, Stefano

    A RESTful API for exchanging Materials Data in the AFLOWLIB.org consortium Richard H. Taylor1 Institute of Standards and Technology, Gaithersburg, Maryland, 20878, USA 2 Department of Mechanical, an Application Program Interface (API) follow- ing REST principles is introduced for the AFLOWLIB.org materials

  6. A Graph-based Approach to API Usage Adaptation Hoan Anh Nguyen,1a

    E-Print Network [OSTI]

    Kim, Miryung

    to accommodate new feature requests, to fix bugs, and to meet new standards, changes in API declarationsA Graph-based Approach to API Usage Adaptation Hoan Anh Nguyen,1a Tung Thanh Nguyen,1b Gary Wilson standards, the clients of software libraries often need to make correspond- ing changes to correctly use

  7. Acoustic behaviour of queens of the Sicil-ian honeybee (Apis mellifera sicula) and

    E-Print Network [OSTI]

    Boyer, Edmond

    honeybee (Apis mellifera lamarckii). Video documentation As described for other honeybee races the queensAcoustic behaviour of queens of the Sicil- ian honeybee (Apis mellifera sicula) and the Egyptian of the Sicilian and Egyptian honeybee produce the acoustical signals of tooting and quaking during the swarming

  8. Notes on Black Hole Fluctuations and Backreaction

    E-Print Network [OSTI]

    B. L. Hu; Alpan Raval; Sukanya Sinha

    1999-01-05T23:59:59.000Z

    In these notes we prepare the ground for a systematic investigation into the issues of black hole fluctuations and backreaction by discussing the formulation of the problem, commenting on possible advantages and shortcomings of existing works, and introducing our own approach via a stochastic semiclassical theory of gravity based on the Einstein-Langevin equation and the fluctuation-dissipation relation for a self-consistent description of metric fluctuations and dissipative dynamics of the black hole with backreaction of its Hawking radiance.

  9. Cloud Platform Support for API Governance Chandra Krintz, Hiranya Jayathilaka, Stratos Dimopoulos, Alexander Pucher, Rich Wolski, and Tevfik Bultan

    E-Print Network [OSTI]

    Bigelow, Stephen

    Cloud Platform Support for API Governance Chandra Krintz, Hiranya Jayathilaka, Stratos Dimopoulos advances in cloud computing make cloud platforms as-a- service (PaaS) ideal for deployment, lifecycle Terms--API Governance; PaaS; cloud platforms; API similarity; I. INTRODUCTION Cloud computing

  10. A simple argument for dark matter as an effect of slightly modified gravity

    E-Print Network [OSTI]

    Peter K. F. Kuhfittig

    2014-09-12T23:59:59.000Z

    This note presents a simple argument showing that dark matter is an effect of $f(R)$ gravity based on the definition of slightly modified gravitational theories previously proposed by the author.

  11. Chiral gravity, log gravity, and extremal CFT

    SciTech Connect (OSTI)

    Maloney, Alexander [Physics Department, McGill University, Montreal, QC H3A 2T8 (Canada); Song Wei [Key Laboratory of Frontiers in Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing, 100190 (China); Center for the Fundamental Laws of Nature Jefferson Physical Laboratory, Harvard University, Cambridge, Massachusetts 02138 (United States); Strominger, Andrew [Center for the Fundamental Laws of Nature Jefferson Physical Laboratory, Harvard University, Cambridge, Massachusetts 02138 (United States)

    2010-03-15T23:59:59.000Z

    We show that the linearization of all exact solutions of classical chiral gravity around the AdS{sub 3} vacuum have positive energy. Nonchiral and negative-energy solutions of the linearized equations are infrared divergent at second order, and so are removed from the spectrum. In other words, chirality is confined and the equations of motion have linearization instabilities. We prove that the only stationary, axially symmetric solutions of chiral gravity are BTZ black holes, which have positive energy. It is further shown that classical log gravity--the theory with logarithmically relaxed boundary conditions--has finite asymptotic symmetry generators but is not chiral and hence may be dual at the quantum level to a logarithmic conformal field theories (CFT). Moreover we show that log gravity contains chiral gravity within it as a decoupled charge superselection sector. We formally evaluate the Euclidean sum over geometries of chiral gravity and show that it gives precisely the holomorphic extremal CFT partition function. The modular invariance and integrality of the expansion coefficients of this partition function are consistent with the existence of an exact quantum theory of chiral gravity. We argue that the problem of quantizing chiral gravity is the holographic dual of the problem of constructing an extremal CFT, while quantizing log gravity is dual to the problem of constructing a logarithmic extremal CFT.

  12. GEOL 474/674 Instructors Notes Fall 2006 11/14/06 1/10

    E-Print Network [OSTI]

    Ahmad, Sajjad

    an aquifer under gravity drainage b) ne = Sy + Sr where Sr is specific retention, the water held back against/674 Instructors Notes Fall 2006 11/14/06 3/10 1. gravity cannot fully drain a soil 2. limit is called field of C. 'ink bottle effect' 1. picture a tube that is larger in the center a) to drain the center

  13. Implementing an API for Distributed Adaptive Computing Systems Mark Jones, Luke Scharf, Jonathan Scott, Chris Twaddle, Matthew Yaconis, Kuan Yao, Peter Athanas

    E-Print Network [OSTI]

    . Development on these systems is time-consuming and platform-specific. A standard ACS API is proposed1 Implementing an API for Distributed Adaptive Computing Systems Mark Jones, Luke Scharf, Jonathan speeds, is provided through a vendor- specific API. This API is typically accessed in a C host program

  14. Breeding for hygienic behaviour in honeybees (Apis mellifera) using free-mated nucleus colonies

    E-Print Network [OSTI]

    Breeding for hygienic behaviour in honeybees (Apis mellifera) using free-mated nucleus colonies 2011 ≠ Accepted 14 October 2011 Abstract ≠ Gains in hygienic behaviour based on maternal selection generation, levels of hygienic behaviour among progeny remained relatively unchanged. Estimated breeding

  15. Analysis of the Security of Web Browsers via API Calls and Function Return Values

    E-Print Network [OSTI]

    Liebrock, Lorie M.

    @cs.nmt.edu kearney@cs.nmt.edu bondili@cs.nmt.edu Department of Computer Science New Mexico Institute of Mining exceptions. None of the more rarely used APIs have been specifically used by attackers to exploit security

  16. VisionGL: Towards an API for Integrating Vision and Graphics Gregor Miller and Sidney Fels

    E-Print Network [OSTI]

    British Columbia, University of

    VisionGL: Towards an API for Integrating Vision and Graphics Gregor Miller and Sidney Fels Human) and per- formance/appearance capture. Recently we introduced OpenVL [Miller and Fels 2013], an abstraction

  17. NSLS-II HIGH LEVEL APPLICATION INFRASTRUCTURE AND CLIENT API DESIGN

    SciTech Connect (OSTI)

    Shen, G.; Yang; L.; Shroff; K.

    2011-03-28T23:59:59.000Z

    The beam commissioning software framework of NSLS-II project adopts a client/server based architecture to replace the more traditional monolithic high level application approach. It is an open structure platform, and we try to provide a narrow API set for client application. With this narrow API, existing applications developed in different language under different architecture could be ported to our platform with small modification. This paper describes system infrastructure design, client API and system integration, and latest progress. As a new 3rd generation synchrotron light source with ultra low emittance, there are new requirements and challenges to control and manipulate the beam. A use case study and a theoretical analysis have been performed to clarify requirements and challenges to the high level applications (HLA) software environment. To satisfy those requirements and challenges, adequate system architecture of the software framework is critical for beam commissioning, study and operation. The existing traditional approaches are self-consistent, and monolithic. Some of them have adopted a concept of middle layer to separate low level hardware processing from numerical algorithm computing, physics modelling, data manipulating, plotting, and error handling. However, none of the existing approaches can satisfy the requirement. A new design has been proposed by introducing service oriented architecture technology. The HLA is combination of tools for accelerator physicists and operators, which is same as traditional approach. In NSLS-II, they include monitoring applications and control routines. Scripting environment is very important for the later part of HLA and both parts are designed based on a common set of APIs. Physicists and operators are users of these APIs, while control system engineers and a few accelerator physicists are the developers of these APIs. With our Client/Server mode based approach, we leave how to retrieve information to the developers of APIs and how to use them to form a physics application to the users. For example, how the channels are related to magnet and what the current real-time setting of a magnet is in physics unit are the internals of APIs. Measuring chromaticities are the users of APIs. All the users of APIs are working with magnet and instrument names in a physics unit. The low level communications in current or voltage unit are minimized. In this paper, we discussed our recent progress of our infrastructure development, and client API.

  18. The radioprotective quality of glycylhistamine and the venom of Apis mellifera (honeybee)

    E-Print Network [OSTI]

    Wright, Donn Alan

    1975-01-01T23:59:59.000Z

    THE RADIOPROTECTIVE QUALITY OF GLYCYLHISTAMINE AND THE VENOM OF APIS MELLIFERA (HONEYBEE) A Thesis by DONN ALAN WRIGHT Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE December 1975 Major Subject: Biophysics (Health Physics) THE RADIOPROTECTIVE QUALITY OF GLYCYLHISTAMINE AND THE VENOM OF APIS MELLIFERA (HONEYBEE) A Thesis by DONN ALAN WRIGHT Approved as to style and content by: ( hairman...

  19. Analogy between turbulence and quantum gravity: beyond Kolmogorov's 1941 theory

    E-Print Network [OSTI]

    S. Succi

    2011-11-14T23:59:59.000Z

    Simple arguments based on the general properties of quantum fluctuations have been recently shown to imply that quantum fluctuations of spacetime obey the same scaling laws of the velocity fluctuations in a homogeneous incompressible turbulent flow, as described by Kolmogorov 1941 (K41) scaling theory. Less noted, however, is the fact that this analogy rules out the possibility of a fractal quantum spacetime, in contradiction with growing evidence in quantum gravity research. In this Note, we show that the notion of a fractal quantum spacetime can be restored by extending the analogy between turbulence and quantum gravity beyond the realm of K41 theory. In particular, it is shown that compatibility of a fractal quantum-space time with the recent Horava-Lifshitz scenario for quantum gravity, implies singular quantum wavefunctions. Finally, we propose an operational procedure, based on Extended Self-Similarity techniques, to inspect the (multi)-scaling properties of quantum gravitational fluctuations.

  20. Einstein Gravity, Massive Gravity, Multi-Gravity and Nonlinear Realizations

    E-Print Network [OSTI]

    Garrett Goon; Kurt Hinterbichler; Austin Joyce; Mark Trodden

    2014-12-18T23:59:59.000Z

    The existence of a ghost free theory of massive gravity begs for an interpretation as a Higgs phase of General Relativity. We revisit the study of massive gravity as a Higgs phase. Absent a compelling microphysical model of spontaneous symmetry breaking in gravity, we approach this problem from the viewpoint of nonlinear realizations. We employ the coset construction to search for the most restrictive symmetry breaking pattern whose low energy theory will both admit the de Rham--Gabadadze--Tolley (dRGT) potentials and nonlinearly realize every symmetry of General Relativity, thereby providing a new perspective from which to build theories of massive gravity. In addition to the known ghost-free terms, we find a novel parity violating interaction which preserves the constraint structure of the theory, but which vanishes on the normal branch of the theory. Finally, the procedure is extended to the cases of bi-gravity and multi-vielbein theories. Analogous parity violating interactions exist here, too, and may be non-trivial for certain classes of multi-metric theories.

  1. VOL2NOTE.CHP:Corel VENTURA

    Gasoline and Diesel Fuel Update (EIA)

    Tables * Note 4. Domestic Crude Oil Production * Note 5. Export Data * Note 6. Quality Control and Data Revision * Note 7. Frames Maintenance * Note 8. Descriptive Monthly...

  2. Black holes in Asymptotically Safe Gravity

    E-Print Network [OSTI]

    Saueressig, Frank; D'Odorico, Giulio; Vidotto, Francesca

    2015-01-01T23:59:59.000Z

    Black holes are among the most fascinating objects populating our universe. Their characteristic features, encompassing spacetime singularities, event horizons, and black hole thermodynamics, provide a rich testing ground for quantum gravity ideas. In this note we observe that the renormalization group improved Schwarzschild black holes constructed by Bonanno and Reuter within Weinberg's asymptotic safety program constitute a prototypical example of a Hayward geometry used to model non-singular black holes within quantum gravity phenomenology. Moreover, they share many features of a Planck star: their effective geometry naturally incorporates the one-loop corrections found in the effective field theory framework, their Kretschmann scalar is bounded, and the black hole singularity is replaced by a regular de Sitter patch. The role of the cosmological constant in the renormalization group improvement process is briefly discussed.

  3. A note on Gauge Theories Coupled to Gravity

    E-Print Network [OSTI]

    Tom Banks; Matt Johnson; Assaf Shomer

    2006-06-29T23:59:59.000Z

    We analyze the bound on gauge couplings $e\\geq m/m_p$, suggested by Arkani-Hamed et.al. We show this bound can be derived from simple semi-classical considerations and holds in spacetime dimensions greater than or equal to four. Non abelian gauge symmetries seem to satisfy the bound in a trivial manner. We comment on the case of discrete symmetries and close by performing some checks for the bound in higher dimensions in the context of string theory.

  4. Particle Dynamics And Emergent Gravity

    E-Print Network [OSTI]

    Amir H. Fatollahi

    2008-05-08T23:59:59.000Z

    The emergent gravity proposal is examined within the framework of noncommutative QED/gravity correspondence from particle dynamics point of view.

  5. Mechanical Characteristics of Submerged Arc Weldment in API Gas Pipeline Steel of Grade X65

    SciTech Connect (OSTI)

    Hashemi, S. H. [Department of Mechanical Engineering, University of Birjand, POBOX 97175-376, Birjand (Iran, Islamic Republic of); Mohammadyani, D. [Materials and Energy Research Center (MERC) POBOX 14155-4777, Tehran (Iran, Islamic Republic of)

    2011-01-17T23:59:59.000Z

    The mechanical properties of submerged arc weldment (SAW) in gas transportation pipeline steel of grade API X65 (65 ksi yield strength) were investigated. This steel is produced by thermo mechanical control rolled (TMC), and is largely used in Iran gas piping systems and networks. The results from laboratory study on three different regions; i.e. base metal (BM), fusion zone (FZ) and heat affected zone (HAZ) were used to compare weldment mechanical characteristics with those specified by API 5L (revision 2004) standard code. Different laboratory experiments were conducted on test specimens taken from 48 inch outside diameter and 14.3 mm wall thickness gas pipeline. The test results showed a gradient of microstructure and Vickers hardness data from the centerline of FZ towards the unaffected MB. Similarly, lower Charpy absorbed energy (compared to BM) was observed in the FZ impact specimens. Despite this, the API specifications were fulfilled in three tested zones, ensuring pipeline structural integrity under working conditions.

  6. A RESTful API for exchanging materials data in the AFLOWLIB.org Richard H. Taylor a,b

    E-Print Network [OSTI]

    Curtarolo, Stefano

    A RESTful API for exchanging materials data in the AFLOWLIB.org consortium Richard H. Taylor a Curtarolo f, a National Institute of Standards and Technology, Gaithersburg, MD 20878, USA b Department (API) following REST principles is introduced for the AFLOWLIB.org materials data repositories

  7. BRIEFING NOTES November 2010

    E-Print Network [OSTI]

    Mound, Jon

    and EU, have promoted biofuel advancement which has #12;Briefing Note. November 2010. SustainableBRIEFING NOTES November 2010 Sustainable biofuels in Africa: cultivation of Jatropha curcas in Mali Background Case study 1 - Mali Case study 2 - Malawi Policy recommendations Biofuel cultivation worldwide

  8. Appears in Proceedings of the 2nd International Workshop on Peer-to-Peer Systems (IPTPS '03). Towards a Common API for Structured Peer-to-Peer Overlays

    E-Print Network [OSTI]

    Zhao, Ben Y.

    , once properly under- stood and abstracted, can be added to the common APIs over time. The rest). Towards a Common API for Structured Peer-to-Peer Overlays¬£ Frank Dabek¬Ĺ Ben Zhao¬ĺ Peter Druschel¬Ņ John to define com- mon APIs for structured peer-to-peer overlays and the key abstractions that can be built

  9. Gravity Train Project

    E-Print Network [OSTI]

    Dec 7, 2013 ... As soon as the brakes of a railroad car in West Lafayette are released, the car will roll down under the force of gravity. It will accelerate, then†...

  10. Water Sim 5.0 Model API Both researchers and water managers

    E-Print Network [OSTI]

    Hall, Sharon J.

    Water Sim 5.0 Model API Both researchers and water managers indicated that a different type not similar between different researchers and between different water managers. Thus it would not be possible that implements a simplified visual interface to the model is provided as an example of using the What is Water

  11. Adding Meaning to Facebook Microposts via a Mash-up API and Tracking Its Data Provenance

    E-Print Network [OSTI]

    Tomkins, Andrew

    Adding Meaning to Facebook Microposts via a Mash-up API and Tracking Its Data Provenance Thomas--The social networking website Facebook offers to its users a feature called "status updates" (or just "status. INTRODUCTION According to official Facebook statistics [7], the social networking website has more than 500

  12. Analyses of Avocado (Persea americana) Nectar Properties and their Perception by Honey bees (Apis mellifera)

    E-Print Network [OSTI]

    Delaplane, Keith S.

    Analyses of Avocado (Persea americana) Nectar Properties and their Perception by Honey bees (Apis Abstract Honey bees are important avocado pollinators. However, due to the low attractiveness of flowers, pollination is often inadequate. Previous work has revealed that avocado honey is relatively unattractive

  13. Hygienic Behavior of Cape and European Apis mellifera (Hymenoptera: Apidae) toward Aethina tumida

    E-Print Network [OSTI]

    Delaplane, Keith S.

    BEHAVIOR Hygienic Behavior of Cape and European Apis mellifera (Hymenoptera: Apidae) toward Aethina(4): 860–864 (2004) ABSTRACT In this study, we tested for the presence and efřcacy of hygienic behavior hygienic behavior. Finally, we determined the oviposition rate (number of A. tumida-perforated cells

  14. THE FINE STRUCTURE OF THE WAX GLAND OF THE HONEY BEE (APIS MELLIFERA L.)

    E-Print Network [OSTI]

    Boyer, Edmond

    THE FINE STRUCTURE OF THE WAX GLAND OF THE HONEY BEE (APIS MELLIFERA L.) Malcolin T. SANFORD Alfred An electron microscopic study was initiated to elucidate the ultrastructure of the wax gland in an actively wax secreting worker honey bee. The investigation showed that the cuticle is penetrated by bundles

  15. Static Detection of API Error-Handling Bugs via Mining Source Code

    E-Print Network [OSTI]

    Young, R. Michael

    Static Detection of API Error-Handling Bugs via Mining Source Code Mithun Acharya and Tao Xie error specifi- cations automatically from software package repositories, without requiring any user inter-procedurally scattered and not always correctly coded by the programmers, manually inferring

  16. Universality of Gravity from Entanglement

    E-Print Network [OSTI]

    Brian Swingle; Mark Van Raamsdonk

    2014-05-12T23:59:59.000Z

    The entanglement "first law" in conformal field theories relates the entanglement entropy for a ball-shaped region to an integral over the same region involving the expectation value of the CFT stress-energy tensor, for infinitesimal perturbations to the CFT vacuum state. In recent work, this was exploited at leading order in $N$ in the context of large N holographic CFTs to show that any geometry dual to a perturbed CFT state must satisfy Einstein's equations linearized about pure AdS. In this note, we investigate the implications of the leading 1/N correction to the exact CFT result. We show that these corrections give rise to the source term for the gravitational equations: for semiclassical bulk states, the expectation value of the bulk stress-energy tensor appears as a source in the linearized equations. In particular, the CFT first law leads to Newton's Law of gravitation and the fact that all sources of stress-energy source the gravitational field. In our derivation, this universality of gravity comes directly from the universality of entanglement (the fact that all degrees of freedom in a subsystem contribute to entanglement entropy).

  17. Time Gravity and Quantum Mechanics

    E-Print Network [OSTI]

    W. G. Unruh

    1993-12-17T23:59:59.000Z

    Time plays different roles in quantum mechanics and gravity. These roles are examined and the problems that the conflict in the roles presents for quantum gravity are briefly summarised.

  18. Editor's Note: Hurricane Sandy,

    E-Print Network [OSTI]

    Rosen, Jay

    Editor's Note: Hurricane Sandy, also known as Super Storm Sandy, Tropi- cal Storm Sandy, or just to protect the public, vital infrastructure, and the environment. Hurricane Sandy When Joseph Bruno, New York- nuity that the city demonstrated in the wake of Hurricane Sandy. So when he addressed a forum at New

  19. Computer Engineering Curriculum Notes

    E-Print Network [OSTI]

    Mather, Patrick T.

    1 Computer Engineering Curriculum Notes 2013-2014 Technical Electives Students fulfill 15 credits be assigned to either group A or group B as determined by Computer Engineering program committee. Every year the computer engineering program committee will review the list and may make change(s). Group A (at least 6

  20. ELECTRICAL ENGINEERING Curriculum Notes

    E-Print Network [OSTI]

    Mather, Patrick T.

    ELECTRICAL ENGINEERING Curriculum Notes 2013-2014 1. Electrical Engineering (EE) students must/programs/electrical_engineering) and minors are used to regulate technical electives. A student must complete four technical elective courses in Electrical Engineering or Computer Engineering. At a minimum

  1. World-making with extended gravity black holes for cosmic natural selection in the multiverse scenario

    E-Print Network [OSTI]

    A. Barrau

    2007-02-09T23:59:59.000Z

    Physics is facing contingency. Not only in facts but also in laws (the frontier becoming extremely narrow). Cosmic natural selection is a tantalizing idea to explain the apparently highly improbable structure of our Universe. In this brief note I will study the creation of Universes by black holes in -string inspired- higher order curvature gravity.

  2. Appears in Proceedings of the 2nd International Workshop on PeertoPeer Systems (IPTPS '03). Towards a Common API for Structured PeertoPeer Overlays

    E-Print Network [OSTI]

    Zhao, Ben Y.

    , once properly under­ stood and abstracted, can be added to the common APIs over time. The rest). Towards a Common API for Structured Peer­to­Peer Overlays #3; Frank Dabek 1 Ben Zhao 2 Peter Druschel 3 effort to define com­ mon APIs for structured peer­to­peer overlays and the key abstractions that can

  3. Gravity on Conformal Superspace

    E-Print Network [OSTI]

    Bryan Kelleher

    2003-11-11T23:59:59.000Z

    The configuration space of general relativity is superspace - the space of all Riemannian 3-metrics modulo diffeomorphisms. However, it has been argued that the configuration space for gravity should be conformal superspace - the space of all Riemannian 3-metrics modulo diffeomorphisms and conformal transformations. Taking this conformal nature seriously leads to a new theory of gravity which although very similar to general relativity has some very different features particularly in cosmology and quantisation. It should reproduce the standard tests of general relativity. The cosmology is studied in some detail. The theory is incredibly restrictive and as a result admits an extremely limited number of possible solutions. The problems of the standard cosmology are addressed and most remarkably the cosmological constant problem is resolved in a natural way. The theory also has several attractive features with regard to quantisation particularly regarding the problem of time.

  4. Viscosity in modified gravity

    E-Print Network [OSTI]

    Iver Brevik

    2012-11-23T23:59:59.000Z

    A bulk viscosity is introduced in the formalism of modified gravity. It is shown that, on the basis of a natural scaling law for the viscosity, a simple solution can be found for quantities such as the Hubble parameter and the energy density. These solutions may incorporate a viscosity-induced Big Rip singularity. By introducing a phase transition in the cosmic fluid, the future singularity can nevertheless in principle be avoided.

  5. Lie algebraic noncommutative gravity

    SciTech Connect (OSTI)

    Banerjee, Rabin; Samanta, Saurav [S. N. Bose National Centre for Basic Sciences, JD Block, Sector III, Salt Lake, Kolkata-700098 (India); Mukherjee, Pradip [Presidency College, 86/1 College Street, Kolkata-700073, West-Bengal (India)

    2007-06-15T23:59:59.000Z

    We exploit the Seiberg-Witten map technique to formulate the theory of gravity defined on a Lie algebraic noncommutative space-time. Detailed expressions of the Seiberg-Witten maps for the gauge parameters, gauge potentials, and the field strengths have been worked out. Our results demonstrate that notwithstanding the introduction of more general noncommutative structure there is no first order correction, exactly as happens for a canonical (i.e. constant) noncommutativity.

  6. Cosmological Tests of Gravity

    E-Print Network [OSTI]

    Koyama, Kazuya

    2015-01-01T23:59:59.000Z

    Einstein's theory of General Relativity (GR) is tested accurately within the local universe i.e., the Solar System, but this leaves open the possibility that it is not a good description at the largest scales in the Universe. The standard model of cosmology assumes GR as the theory to describe gravity on all scales. In 1998, astronomers made the surprising discovery that the expansion of the Universe is accelerating, not slowing down. This late-time acceleration of the Universe has become the most challenging problem in theoretical physics. Within the framework of GR, the acceleration would originate from an unknown dark energy. Alternatively, it could be that there is no dark energy and GR itself is in error on cosmological scales. The standard model of cosmology is based on a huge extrapolation of our limited knowledge of gravity. This discovery of the late time acceleration of the Universe may require us to revise the theory of gravity and the standard model of cosmology based on GR. We will review recent ...

  7. Briefing notes on MPhils

    E-Print Network [OSTI]

    Runde, Jochen

    2009-07-13T23:59:59.000Z

    staff.í (extract from BP internal report) The CMI MPhil initiative is also serving as an agent of change within Cambridge University. Successes on this front include: great strides in the development of the platform-sharing model (e.g. all CMI... BRIEFING NOTE Professional Practice MPhil Programmes developed under the aegis of CMI CMI has sponsored the development of a number of new MPhils at Cambridge, inspired by the successful ĎProfessional Practiceí programmes at MIT. It is the multi...

  8. Entropic Gravity in Rindler Space

    E-Print Network [OSTI]

    Edi Halyo

    2011-04-13T23:59:59.000Z

    We show that Rindler horizons are entropic screens and gravity is an entropic force in Rindler space by deriving the Verlinde entropy formula from the focusing of light due to a mass close to the horizon. Consequently, gravity is also entropic in the near horizon regions of Schwarzschild and de Sitter space-times. In different limits, the entropic nature of gravity in Rindler space leads to the Bekenstein entropy bound and the uncertainty principle.

  9. Lifshitz Gravity for Lifshitz Holography

    E-Print Network [OSTI]

    Tom Griffin; Petr Horava; Charles M. Melby-Thompson

    2012-11-20T23:59:59.000Z

    We argue that Horava-Lifshitz (HL) gravity provides the minimal holographic dual for Lifshitz-type field theories with anisotropic scaling and dynamical exponent z. First we show that Lifshitz spacetimes are vacuum solutions of HL gravity, without need for additional matter. Then we perform holographic renormalization of HL gravity, and show how it reproduces the full structure of the z=2 anisotropic Weyl anomaly in dual field theories in 2+1 dimensions, while its minimal relativistic gravity counterpart yields only one of two independent central charges in the anomaly.

  10. Generalized massive gravity in AdS{sub 3} spacetime

    SciTech Connect (OSTI)

    Liu Yan; Sun Yawen [Key Laboratory of Frontiers in Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, P. O. Box 2735, Beijing 100190 (China)

    2009-06-15T23:59:59.000Z

    In this note we investigate the generalized massive gravity in asymptotically AdS{sub 3} spacetime by combining the two mass terms of topological massive gravity and new massive gravity theory. We study the linearized excitations around the AdS{sub 3} background and find that at a specific value of a certain combination of the two mass parameters (chiral line), one of the massive graviton solutions becomes the left-moving massless mode. It is shown that the theory is chiral at this line under Brown-Henneaux boundary condition. Because of this degeneration of the gravitons the new log solution which has a logarithmic asymptotic behavior is also a solution to this gravity theory at the chiral line. The log boundary condition which was proposed to accommodate this log solution is proved to be consistent at this chiral line. The resulting theory is no longer chiral except at a special point on the chiral line, where another new solution with log-square asymptotic behavior exists. At this special point, we prove that a new kind of boundary condition called log-square boundary condition, which accommodates this new solution, can be consistent.

  11. The leak resistance of 2-inch N-80 API treaded tubular connection

    E-Print Network [OSTI]

    Weiner, Peter Douglas

    1961-01-01T23:59:59.000Z

    -UPS OF 2-INCH N-80 EUE TUBING 15 17 13 FRONTAL VIEW OF TEST TANK 14 TEST TA1K 15 PRESSURE TEST DATA SHEET 16 LONG DURATION TANK 18 19 21 22 THE LEAK RESISTANCE OF 2-INCH N-80 API ~ED TUBULAR CONNECTION INTROI3UCTION In recent years, well depths... tension until an equivalent pull of 18, 000 feet of tubing was exerted. on the tubing. Each specimen was subJected to from 50 to 100 thermocycles to simulate the shut-in and. flow conditions in an oil well and to increase the severity of the pressure...

  12. On Modified Gravity

    E-Print Network [OSTI]

    Ivan Dimitrijevic; Branko Dragovich; Jelena Grujic; Zoran Rakic

    2012-04-09T23:59:59.000Z

    We consider some aspects of nonlocal modified gravity, where nonlocality is of the type $R \\mathcal{F}(\\Box) R$. In particular, using ansatz of the form $\\Box R = c R^\\gamma,$ we find a few $R(t)$ solutions for the spatially flat FLRW metric. There are singular and nonsingular bounce solutions. For late cosmic time, scalar curvature R(t) is in low regime and scale factor a(t) is decelerated. R (t) = 0 satisfies all equations when k = -1.

  13. Mechanism of Gravity Impulse

    E-Print Network [OSTI]

    Ning Wu

    2005-10-01T23:59:59.000Z

    It is well-known that energy-momentum is the source of gravitational field. For a long time, it is generally believed that only stars with huge masses can generate strong gravitational field. Based on the unified theory of gravitational interactions and electromagnetic interactions, a new mechanism of the generation of gravitational field is studied. According to this mechanism, in some special conditions, electromagnetic energy can be directly converted into gravitational energy, and strong gravitational field can be generated without massive stars. Gravity impulse found in experiments is generated by this mechanism.

  14. Modes of log gravity

    SciTech Connect (OSTI)

    Bergshoeff, Eric A.; Rosseel, Jan [Centre for Theoretical Physics, University of Groningen, Nijenborgh 4, 9747 AG Groningen (Netherlands); Hohm, Olaf [Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States); Townsend, Paul K. [Department of Applied Mathematics and Theoretical Physics, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge, CB3 0WA (United Kingdom)

    2011-05-15T23:59:59.000Z

    The physical modes of a recently proposed D-dimensional 'critical gravity', linearized about its anti-de Sitter vacuum, are investigated. All 'log mode' solutions, which we categorize as 'spin-2' or 'Proca', arise as limits of the massive spin-2 modes of the noncritical theory. The linearized Einstein tensor of a spin-2 log mode is itself a 'nongauge' solution of the linearized Einstein equations whereas the linearized Einstein tensor of a Proca mode takes the form of a linearized general coordinate transformation. Our results suggest the existence of a holographically dual logarithmic conformal field theory.

  15. Notes and Definitions

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItemResearch > The EnergyCenterDioxideDocumentationThreeNewsfuelNotes and Definitions

  16. Reduced models for quantum gravity

    E-Print Network [OSTI]

    T. Thiemann

    1999-10-04T23:59:59.000Z

    The preceding talks given at this conference have dealt mainly with general ideas for, main problems of and techniques for the task of quantizing gravity canonically. Since one of the major motivations to arrange for this meeting was that it should serve as a beginner's introduction to canonical quantum gravity, we regard it as important to demonstrate the usefulness of the formalism by means of applying it to simplified models of quantum gravity, here formulated in terms of Ashtekar's new variables. From the various, completely solvable, models that have been discussed in the literature we choose those that we consider as most suitable for our pedagogical reasons, namely 2+1 gravity and the spherically symmetric model. The former model arises from a dimensional, the latter from a Killing reduction of full 3+1 gravity. While 2+1 gravity is usually treated in terms of closed topologies without boundary of the initial data hypersurface, the toplogy for the spherically symmetric system is chosen to be asymptotically flat. Finally, 2+1 gravity is more suitably quantized using the loop representation while spherically symmetric gravity is easier to quantize via the self-dual representation. Accordingly, both types of reductions, both types of topologies and both types of representations that are mainly employed in the literature in the context of the new variables come into practice. What makes the discussion especially clear is the fact that for both models the reduced phase space turns out to be finitely dimensional.

  17. Notes on basic algebraic geometry

    E-Print Network [OSTI]

    2008-06-16T23:59:59.000Z

    Jun 16, 2008 ... Notes on basic algebraic geometry ...... Having discovered the basic equation ..... back to a rational function on X. Thus we get a nonzero†...

  18. AdS Chern-Simons Gravity induces Conformal Gravity

    E-Print Network [OSTI]

    Rodrigo Aros; Danilo E. Diaz

    2013-12-25T23:59:59.000Z

    The leitmotif of this paper is the question of whether four- and higher even-dimensional Conformal Gravities do have a Chern-Simons pedigree. We show that Weyl gravity can be obtained as dimensional reduction of a five-dimensional Chern-Simons action for a suitable (gauged-fixed, tractor-like) five-dimensional AdS connection. The gauge-fixing and dimensional reduction program admits a readily generalization to higher dimensions for the case of certain conformal gravities obtained by contractions of the Weyl tensor.

  19. NOTE / NOTE Sex ratio variation in gynodioecious species of

    E-Print Network [OSTI]

    Dorken, Marcel

    NOTE / NOTE Sex ratio variation in gynodioecious species of Echium endemic to the Canary Islands Marcel E. Dorken Abstract: Species of Echium from the Canary Islands represent an adaptive radiation fertility of females and hermaphrodites were de- tected. Key words: Canary Islands, Echium, island radiation

  20. Notes2Providers.doc -1-Notes to Retail Providers

    E-Print Network [OSTI]

    providers that purchase electricity from a power pool that submits an Annual Report to the Energy CommissionNotes2Providers.doc -1- Notes to Retail Providers February 2003 Power Source Disclosure an energy mix or fuel mix different than the California Mix, (Net System Power)i . As a retail provider you

  1. Quantum Gravity and Inflation

    E-Print Network [OSTI]

    M. G. Romania; N. C. Tsamis; R. P. Woodard

    2014-12-05T23:59:59.000Z

    We review some perturbative results obtained in quantum gravity in an accelerating cosmological background. We then describe a class of non-local, purely gravitational models which have the correct structure to reproduce the leading infrared logarithms of quantum gravitational back-reaction during the inflationary regime. These models end inflation in a distinctive phase of oscillations with slight and short violations of the weak energy condition and should, when coupled to matter, lead to rapid reheating. By elaborating this class of models we exhibit one that has the same behaviour during inflation, goes quiescent until the onset of matter domination, and induces a small, positive cosmological constant of about the right size thereafter. We also briefly comment on the primordial density perturbations that this class of models predict.

  2. Duality in linearized gravity

    SciTech Connect (OSTI)

    Henneaux, Marc; Teitelboim, Claudio [Physique Theorique et Mathematique and International Solvay Institutes, Universite Libre de Bruxelles, Campus Plaine C. P. 231, B-1050 Brussels (Belgium) and Centro de Estudios Cientificos (CECS), Valdivia (Chile); Centro de Estudios Cientificos (CECS), Valdivia (Chile)

    2005-01-15T23:59:59.000Z

    We show that duality transformations of linearized gravity in four dimensions, i.e., rotations of the linearized Riemann tensor and its dual into each other, can be extended to the dynamical fields of the theory so as to be symmetries of the action and not just symmetries of the equations of motion. Our approach relies on the introduction of two superpotentials, one for the spatial components of the spin-2 field and the other for their canonically conjugate momenta. These superpotentials are two-index, symmetric tensors. They can be taken to be the basic dynamical fields and appear locally in the action. They are simply rotated into each other under duality. In terms of the superpotentials, the canonical generator of duality rotations is found to have a Chern-Simons-like structure, as in the Maxwell case.

  3. Entropy and quantum gravity

    E-Print Network [OSTI]

    Kay, Bernard S

    2015-01-01T23:59:59.000Z

    We give an account of the matter-gravity entanglement hypothesis which, unlike the standard approach to entropy based on coarse-graining, offers a definition for the entropy of a closed system as a real and objective quantity. We explain how this new approach offers an explanation for the Second Law of Thermodynamics in general and a non-paradoxical understanding of information loss during black hole formation and evaporation in particular. We also very briefly review some recent related work on the nature of equilibrium states involving quantum black holes and point out how it promises to resolve some puzzling issues in the current version of the string theory approach to black hole entropy.

  4. Natural Inflation and Quantum Gravity

    E-Print Network [OSTI]

    Anton de la Fuente; Prashant Saraswat; Raman Sundrum

    2015-01-29T23:59:59.000Z

    Cosmic Inflation provides an attractive framework for understanding the early universe and the cosmic microwave background. It can readily involve energies close to the scale at which Quantum Gravity effects become important. General considerations of black hole quantum mechanics suggest nontrivial constraints on any effective field theory model of inflation that emerges as a low-energy limit of quantum gravity, in particular the constraint of the Weak Gravity Conjecture. We show that higher-dimensional gauge and gravitational dynamics can elegantly satisfy these constraints and lead to a viable, theoretically-controlled and predictive class of Natural Inflation models.

  5. Riding Gravity Away from Doomsday

    E-Print Network [OSTI]

    Sen, Ashoke

    2015-01-01T23:59:59.000Z

    The discovery that most of the energy density in the universe is stored in the form of dark energy has profound consequences for our future. In particular our current limited understanding of quantum theory of gravity indicates that some time in the future our universe will undergo a phase transition that will destroy us and everything else around us instantaneously. However the laws of gravity also suggest a way out -- some of our descendants could survive this catastrophe by riding gravity away from the danger. In this essay I describe the tale of this escape from doomsday.

  6. Riding Gravity Away from Doomsday

    E-Print Network [OSTI]

    Ashoke Sen

    2015-03-27T23:59:59.000Z

    The discovery that most of the energy density in the universe is stored in the form of dark energy has profound consequences for our future. In particular our current limited understanding of quantum theory of gravity indicates that some time in the future our universe will undergo a phase transition that will destroy us and everything else around us instantaneously. However the laws of gravity also suggest a way out -- some of our descendants could survive this catastrophe by riding gravity away from the danger. In this essay I describe the tale of this escape from doomsday.

  7. Texas Phosphorus Index TECHNICAL NOTES

    E-Print Network [OSTI]

    Mukhtar, Saqib

    for West Texas, see Figure 1. NRCS and Extension Service specialists in Texas developed the P indicesTexas Phosphorus Index TECHNICAL NOTES U.S. DEPARTMENT OF AGRICULTURE NATURAL RESOURCES CONSERVATION SERVICE TEXAS Revised December, 2012 AGRONOMY TECHNICAL NOTE NUMBER ≠ 15 PHOSPHORUS ASSESSMENT

  8. How energy-efficient is your cloud app? Energy measurements in virtualized environments with PowerAPI

    E-Print Network [OSTI]

    Boyer, Edmond

    How energy-efficient is your cloud app? Energy measurements in virtualized environments with PowerAPI Context Energy-efficiency major concern in data centers Existing approaches work for physical servers consumption in virtualized environments Measurements are first step towards energy-efficient data centers Host

  9. Critical Gravity in Four Dimensions

    SciTech Connect (OSTI)

    Lue, H. [China Economics and Management Academy, Central University of Finance and Economics, Beijing 100081 (China); Institute for Advanced Study, Shenzhen University, Nanhai Avenue 3688, Shenzhen 518060 (China); Pope, C. N. [George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Texas A and M University, College Station, Texas 77843 (United States); DAMTP, Centre for Mathematical Sciences, Cambridge University, Wilberforce Road, Cambridge CB3 OWA (United Kingdom)

    2011-05-06T23:59:59.000Z

    We study four-dimensional gravity theories that are rendered renormalizable by the inclusion of curvature-squared terms to the usual Einstein action with a cosmological constant. By choosing the parameters appropriately, the massive scalar mode can be eliminated and the massive spin-2 mode can become massless. This ''critical'' theory may be viewed as a four-dimensional analogue of chiral topologically massive gravity, or of critical 'new massive gravity' with a cosmological constant, in three dimensions. We find that the on-shell energy for the remaining massless gravitons vanishes. There are also logarithmic spin-2 modes, which have positive energy. The mass and entropy of standard Schwarzschild-type black holes vanish. The critical theory might provide a consistent toy model for quantum gravity in four dimensions.

  10. Quantum Gravity: Motivations and Alternatives

    E-Print Network [OSTI]

    Reiner Hedrich

    2009-08-03T23:59:59.000Z

    The mutual conceptual incompatibility between GR and QM/QFT is generally seen as the most essential motivation for the development of a theory of Quantum Gravity (QG). It leads to the insight that, if gravity is a fundamental interaction and QM is universally valid, the gravitational field will have to be quantized, not at least because of the inconsistency of semi-classical theories of gravity. If this means to quantize GR, its identification of the gravitational field with the spacetime metric has to be taken into account. And the resulting quantum theory has to be background-independent. This can not be achieved by means of quantum field theoretical procedures. More sophisticated strategies have to be applied. One of the basic requirements for such a quantization strategy is that the resulting quantum theory has GR as a classical limit. - However, should gravity not be a fundamental, but an residual, emergent interaction, it could very well be an intrinsically classical phenomenon. Should QM be nonetheless universally valid, we had to assume a quantum substrate from which gravity would result as an emergent classical phenomenon. And there would be no conflict with the arguments against semi-classical theories, because there would be no gravity at all on the substrate level. The gravitational field would not have any quantum properties, and a quantization of GR would not lead to any fundamental theory. The objective of a theory of 'QG' would instead be the identification of the quantum substrate from which gravity results. - The paper tries to give an overview over the main options for theory construction in the field of QG. Because of the still unclear status of gravity and spacetime, it pleads for the necessity of a plurality of conceptually different approaches to QG.

  11. Accurate Gravities of F, G, and K stars from High Resolution Spectra Without External Constraints

    E-Print Network [OSTI]

    Brewer, John M; Basu, Sarbani; Valenti, Jeff A; Piskunov, Nikolai

    2015-01-01T23:59:59.000Z

    We demonstrate a new procedure to derive accurate and precise surface gravities from high resolution spectra without the use of external constraints. Our analysis utilizes Spectroscopy Made Easy (SME) with robust spectral line constraints and uses an iterative process to mitigate degeneracies in the fitting process. We adopt an updated radiative transfer code, a new treatment for neutral perturber broadening, a line list with multiple gravity constraints and separate fitting for global stellar properties and abundance determinations. To investigate the sources of temperature dependent trends in determining log g noted in previous studies, we obtained Keck HIRES spectra of 42 Kepler asteroseismic stars. In comparison to asteroseismically determined log g our spectroscopic analysis has a constant offset of 0.01 dex with a root mean square (RMS) scatter of 0.05 dex. We also analyzed 30 spectra which had published surface gravities determined using the $a/R_*$ technique from planetary transits and found a constan...

  12. Conformal Lifshitz Gravity from Holography

    E-Print Network [OSTI]

    Tom Griffin; Petr Horava; Charles M. Melby-Thompson

    2012-04-03T23:59:59.000Z

    We show that holographic renormalization of relativistic gravity in asymptotically Lifshitz spacetimes naturally reproduces the structure of gravity with anisotropic scaling: The holographic counterterms induced near anisotropic infinity take the form of the action for gravity at a Lifshitz point, with the appropriate value of the dynamical critical exponent $z$. In the particular case of 3+1 bulk dimensions and $z=2$ asymptotic scaling near infinity, we find a logarithmic counterterm, related to anisotropic Weyl anomaly of the dual CFT, and show that this counterterm reproduces precisely the action of conformal gravity at a $z=2$ Lifshitz point in 2+1 dimensions, which enjoys anisotropic local Weyl invariance and satisfies the detailed balance condition. We explain how the detailed balance is a consequence of relations among holographic counterterms, and point out that a similar relation holds in the relativistic case of holography in $AdS_5$. Upon analytic continuation, analogous to the relativistic case studied recently by Maldacena, the action of conformal gravity at the $z=2$ Lifshitz point features in the ground-state wavefunction of a gravitational system with an interesting type of spatial anisotropy.

  13. Gauge Theory of Quantum Gravity

    E-Print Network [OSTI]

    J. W. Moffat

    1994-01-04T23:59:59.000Z

    A gauge theory of quantum gravity is formulated, in which an internal, field dependent metric is introduced which non-linearly realizes the gauge fields on the non-compact group $SL(2,C)$, while linearly realizing them on $SU(2)$. Einstein's $SL(2,C)$ invariant theory of gravity emerges at low energies, since the extra degrees of freedom associated with the quadratic curvature and the internal metric only dominate at high energies. In a fixed internal metric gauge, only the the $SU(2)$ gauge symmetry is satisfied, the particle spectrum is identified and the Hamiltonian is shown to be bounded from below. Although Lorentz invariance is broken in this gauge, it is satisfied in general. The theory is quantized in this fixed, broken symmetry gauge as an $SU(2)$ gauge theory on a lattice with a lattice spacing equal to the Planck length. This produces a unitary and finite theory of quantum gravity.

  14. Energy bounds in designer gravity

    SciTech Connect (OSTI)

    Amsel, Aaron J.; Marolf, Donald [Physics Department, UCSB, Santa Barbara, California 93106 (United States)

    2006-09-15T23:59:59.000Z

    We consider asymptotically anti-de Sitter gravity coupled to tachyonic scalar fields with mass at or slightly above the Breitenlohner-Freedman bound in d{>=}4 spacetime dimensions. The boundary conditions in these ''designer gravity'' theories are defined in terms of an arbitrary function W. We give a general argument that the Hamiltonian generators of asymptotic symmetries for such systems will be finite, and proceed to construct these generators using the covariant phase space method. The direct calculation confirms that the generators are finite and shows that they take the form of the pure gravity result plus additional contributions from the scalar fields. By comparing the generators to the spinor charge, we derive a lower bound on the gravitational energy when W has a global minimum and the Breitenlohner-Freedman bound is not saturated.

  15. Counterterms, critical gravity and holography

    E-Print Network [OSTI]

    Kallol Sen; Aninda Sinha; Nemani V. Suryanarayana

    2012-05-18T23:59:59.000Z

    We consider counterterms for odd dimensional holographic CFTs. These counterterms are derived by demanding cut-off independence of the CFT partition function on $S^d$ and $S^1 \\times S^{d-1}$. The same choice of counterterms leads to a cut-off independent Schwarzschild black hole entropy. When treated as independent actions, these counterterm actions resemble critical theories of gravity, i.e., higher curvature gravity theories where the additional massive spin-2 modes become massless. Equivalently, in the context of AdS/CFT, these are theories where at least one of the central charges associated with the trace anomaly vanishes. Connections between these theories and logarithmic CFTs are discussed. For a specific choice of parameters, the theories arising from counterterms are non-dynamical and resemble a DBI generalization of gravity. For even dimensional CFTs, analogous counterterms cancel log-independent cut-off dependence.

  16. Fluid Gravity Engineering Rocket motor flow analysis

    E-Print Network [OSTI]

    Anand, Mahesh

    Fluid Gravity Engineering Capability · Rocket motor flow analysis -Internal (performance) -External (plume / contamination) · Effect on landing site (surface alteration) -In-depth flow through porous young scientists/engineers Fluid Gravity Engineering Ltd #12;

  17. Lovelock-Brans-Dicke gravity

    E-Print Network [OSTI]

    Tian, David Wenjie

    2015-01-01T23:59:59.000Z

    According to Lovelock's theorem, the Hilbert-Einstein and the Lovelock actions are indistinguishable from their field equations. However, they have different scalar-tensor counterparts, which correspond to the Brans-Dicke and the \\emph{Lovelock-Brans-Dicke} (LBD) gravities, respectively. In this paper the LBD model of alternative gravity with the Lagrangian density $\\mathscr{L}_{\\text{LBD}}=\\frac{1}{16\\pi}\\left[\\phi\\left(R+\\frac{a}{\\sqrt{-g}}{}^*RR + b\\mathcal{G}\\right)-\\frac{\\omega_{\\text L}}{\\phi}\

  18. Lovelock-Brans-Dicke gravity

    E-Print Network [OSTI]

    David Wenjie Tian; Ivan Booth

    2015-03-02T23:59:59.000Z

    According to Lovelock's theorem, the Hilbert-Einstein and the Lovelock actions are indistinguishable from their field equations. However, they have different scalar-tensor counterparts, which correspond to the Brans-Dicke and the \\emph{Lovelock-Brans-Dicke} (LBD) gravities, respectively. In this paper the LBD model of alternative gravity with the Lagrangian density $\\mathscr{L}_{\\text{LBD}}=\\frac{1}{16\\pi}[\\phi(R+\\frac{a}{\\sqrt{-g}}{}^*RR + b\\mathcal{G})-\\frac{\\omega_{\\text L}}{\\phi}\

  19. Intrusive gravity currents in two-layer

    E-Print Network [OSTI]

    Flynn, Morris R.

    Intrusive gravity currents in two-layer stratified media Morris R. Flynn & Paul F. Linden Dept.avalanche.org/pictures #12;∑ `Microbursts' pose a non-trivial threat to airplane safety Introduction Impacts on human health;∑ Whereas gravity currents travel along a solid boundary, intrusive gravity currents or intrusions propagate

  20. Quantum Gravity and Precision Tests

    E-Print Network [OSTI]

    C. P. Burgess

    2006-06-24T23:59:59.000Z

    This article provides a cartoon of the quantization of General Relativity using the ideas of effective field theory. These ideas underpin the use of General Relativity as a theory from which precise predictions are possible, since they show why quantum corrections to standard classical calculations are small. Quantum corrections can be computed controllably provided they are made for the weakly-curved geometries associated with precision tests of General Relativity, such as within the solar system or for binary pulsars. They also bring gravity back into the mainstream of physics, by showing that its quantization (at low energies) exactly parallels the quantization of other, better understood, non-renormalizable field theories which arise elsewhere in physics. Of course effective field theory techniques do not solve the fundamental problems of quantum gravity discussed elsewhere in these pages, but they do helpfully show that these problems are specific to applications on very small distance scales. They also show why we may safely reject any proposals to modify gravity at long distances if these involve low-energy problems (like ghosts or instabilities), since such problems are unlikely to be removed by the details of the ultimate understanding of gravity at microscopic scales.

  1. High-gravity central stars

    E-Print Network [OSTI]

    Thomas Rauch

    2006-07-11T23:59:59.000Z

    NLTE spectral analyses of high-gravity central stars by means of state-of-the-art model atmosphere techniques provide information about the precursor AGB stars. The hydrogen-deficient post-AGB stars allow investigations on the intershell matter which is apparently exhibited at the stellar surface. We summarize recent results from imaging, spectroscopy, and spectropolarimetry.

  2. Antimatter, the SME, and Gravity

    E-Print Network [OSTI]

    Jay D. Tasson

    2012-12-07T23:59:59.000Z

    A general field-theoretic framework for the analysis of CPT and Lorentz violation is provided by the Standard-Model Extension (SME). This work discusses a number of SME-based proposals for tests of CPT and Lorentz symmetry, including antihydrogen spectroscopy and antimatter gravity tests.

  3. Antimatter, the SME, and Gravity

    E-Print Network [OSTI]

    Tasson, Jay D

    2012-01-01T23:59:59.000Z

    A general field-theoretic framework for the analysis of CPT and Lorentz violation is provided by the Standard-Model Extension (SME). This work discusses a number of SME-based proposals for tests of CPT and Lorentz symmetry, including antihydrogen spectroscopy and antimatter gravity tests.

  4. Liouville quantum gravity and KPZ

    E-Print Network [OSTI]

    Duplantier, Bertrand

    Consider a bounded planar domain D, an instance h of the Gaussian free field on D, with Dirichlet energy ... and a constant 0[less than or equal to]?<2. The Liouville quantum gravity measure on D is the weak limit as ...

  5. Technical Note 499 December1990

    E-Print Network [OSTI]

    Technical Note 499 · December1990 Interpretation as Abduction Jerry R. Hobbs, Mark Stickel;Interpretation as Abduction Jerry R. Hobbs, Mark Stickel, Douglas Appelt, and Paul Martin Artificial Intelligence Center SRI International Abstract Abduction is inference to the best explanation. In the TACITUS project

  6. A note on axial symmetries

    E-Print Network [OSTI]

    Christopher Beetle; Shawn Wilder

    2013-12-31T23:59:59.000Z

    This note describes a local scheme to characterize and normalize an axial Killing field on a general Riemannian geometry. No global assumptions are necessary, such as that the orbits of the Killing field all have period $2 \\pi$. Rather, any Killing field that vanishes at at least one point necessarily has the expected global properties.

  7. Axions in gravity with torsion

    E-Print Network [OSTI]

    Oscar Castillo-Felisola; Cristobal Corral; Sergey Kovalenko; Ivan Schmidt; Valery E. Lyubovitskij

    2015-04-13T23:59:59.000Z

    We study a scenario allowing a solution of the strong charge parity problem via the Peccei-Quinn mechanism, implemented in gravity with torsion. In this framework there appears a torsion-related pseudoscalar field known as Kalb-Ramond axion. We compare it with the so-called Barbero-Immirzi axion recently proposed in the literature also in the context of the gravity with torsion. We show that they are equivalent from the viewpoint of the effective theory. The phenomenology of these torsion-descended axions is completely determined by the Planck scale without any additional model parameters. These axions are very light and very weakly interacting with ordinary matter. We briefly comment on their astrophysical and cosmological implications in view of the recent BICEP2 and Planck data.

  8. Axions in gravity with torsion

    E-Print Network [OSTI]

    Castillo-Felisola, Oscar; Kovalenko, Sergey; Schmidt, Ivan; Lyubovitskij, Valery E

    2015-01-01T23:59:59.000Z

    We study a scenario allowing a solution of the strong CP-problem via the Peccei-Quinn mechanism, implemented in gravity with torsion. In this framework there appears a torsion-related pseudoscalar field known as Kalb-Ramond axion. We compare it with the so called Barbero-Immirzi axion recently proposed in the literature also in the context of the gravity with torsion. We show that they are equivalent from the view point of the effective theory. The phenomenology of these torsion-descended axions is completely determined by the Planck scale without any additional model parameters. These axions are very light and very weakly interacting with ordinary matter. We briefly comment on their astrophysical and cosmological implications in view of the recent BICEP2 and Planck data.

  9. Black holes in massive gravity

    E-Print Network [OSTI]

    Babichev, Eugeny

    2015-01-01T23:59:59.000Z

    We review the black hole solutions of the ghost-free massive gravity theory and its bimetric extension and outline the main results on the stability of these solutions against small perturbations. Massive (bi)-gravity accommodates exact black hole solutions, analogous to those of General Relativity. In addition to these solutions, hairy black holes -- solutions with no correspondent in General Relativity -- have been found numerically, whose existence is a natural consequence of the absence of the Birkhoff's theorem in these theories. The existence of extra propagating degrees of freedom, makes the stability properties of these black holes richer and more complex than those of General Relativity. In particular, the bi-Schwarzschild black hole exhibits an unstable spherically symmetric mode, while the bi-Kerr geometry is also generically unstable, both against the spherical mode and against superradiant instabilities. If astrophysical black holes are described by these solutions, the superradiant instability o...

  10. NOTE: OPTIMAL NON-HOMOGENEOUS COMPOSITES FOR ...

    E-Print Network [OSTI]

    R. Tavakoli

    2012-10-02T23:59:59.000Z

    NOTE: OPTIMAL NON-HOMOGENEOUS COMPOSITES FOR. DYNAMIC LOADING REVISITED. R. TAVAKOLI. 1. Problem formulation. Consider ? ? Rd (

  11. THOMSON SCIENTIFIC EndNote Web

    E-Print Network [OSTI]

    texto. · Armazenar até 10.000 referências em sua base de dados pessoal (EndNote Web Library), pro resultados das pesquisas diretamente em sua base de dados pessoal do EndNote Web clicando no botão "Save to EndNote Web". As referências sal- vas em sua base de dados pessoal do EndNote Web serão exibidas com

  12. OFFSHORE WIND FARMS Guidance note for Environmental

    E-Print Network [OSTI]

    OFFSHORE WIND FARMS Guidance note for Environmental Impact Assessment In respect of FEPA and CPA requirements Version 2 - June 2004 #12;Offshore Wind Farms: Guidance Note for Environmental Impact Assessment 2004 #12;Offshore Wind Farms: Guidance Note for Environmental Impact Assessment in Respect of FEPA

  13. DANE TECHNICAL NOTE INFN -LNF, Accelerator Division

    E-Print Network [OSTI]

    Istituto Nazionale di Fisica Nucleare (INFN)

    K K DANE TECHNICAL NOTE INFN - LNF, Accelerator Division Frascati, March 10, 1997 Note: BM-1 BUNCH current. This measurement allows to calculate energy losses due to parasitic beam-vacuum chamber losses. In this Note we present results of the measurements and their analysis, comparing the results

  14. Born-Infeld gravity in three dimensions

    SciTech Connect (OSTI)

    Alishahiha, Mohsen [School of physics, Institute for Research in Fundamental Sciences (IPM), P.O. Box 19395-5531, Tehran (Iran, Islamic Republic of); Naseh, Ali [School of physics, Institute for Research in Fundamental Sciences (IPM), P.O. Box 19395-5531, Tehran (Iran, Islamic Republic of); Department of Physics, Sharif University of Technology, P.O. Box 11365-9161, Tehran (Iran, Islamic Republic of); Soltanpanahi, Hesam [School of physics, Institute for Research in Fundamental Sciences (IPM), P.O. Box 19395-5531, Tehran (Iran, Islamic Republic of); School of Physics and Centre for Theoretical Physics, University of the Witwatersrand, WITS 2050 Johannesburg (South Africa)

    2010-07-15T23:59:59.000Z

    In this paper we explore different aspects of three dimensional Born-Infeld as well as Born-Infeld-Chern-Simons gravity. We show that the models have anti-de Sitter and anti-de Sitter wave vacuum solutions. Moreover, we observe that although Born-Infeld-Chern-Simons gravity admits a logarithmic solution, Born-Infeld gravity does not, though it has a limiting logarithmic solution as we approach the critical point.

  15. Supersymmetry and Gravity in Noncommutative Field Theories

    E-Print Network [OSTI]

    Victor O. Rivelles

    2003-05-14T23:59:59.000Z

    We discuss the renormalization properties of noncommutative supersymmetric theories. We also discuss how the gauge field plays a role similar to gravity in noncommutative theories.

  16. Does f(R,T) gravity admit a stationary scenario between dark energy and dark matter in its framework?

    E-Print Network [OSTI]

    Rudra, Prabir

    2015-01-01T23:59:59.000Z

    In this note we address the well-known cosmic coincidence problem in the framework of the \\textit{f(R,T)} gravity. In order to achieve this, an interaction between dark energy and dark matter is considered. A constraint equation is obtained which filters the \\textit{f(R,T)} models that produce a stationary scenario between dark energy and dark matter. Due to the absence of a universally accepted interaction term introduced by a fundamental theory, the study is conducted over three different forms of chosen interaction terms. As an illustration three widely known models of \\textit{f(R,T)} gravity are taken into consideration and used in the setup designed to study the problem. The study reveals that, the realization of the coincidence scenario is almost impossible for the popular models of $f(R,T)$ gravity, thus proving to be a major setback for these models.

  17. Can Gravity Probe B usefully constrain torsion gravity theories?

    SciTech Connect (OSTI)

    Flanagan, Eanna E.; Rosenthal, Eran [Center for Radiophysics and Space Research, Cornell University, Ithaca, New York, 14853 (United States)

    2007-06-15T23:59:59.000Z

    In most theories of gravity involving torsion, the source for torsion is the intrinsic spin of matter. Since the spins of fermions are normally randomly oriented in macroscopic bodies, the amount of torsion generated by macroscopic bodies is normally negligible. However, in a recent paper, Mao et al. (arXiv:gr-qc/0608121) point out that there is a class of theories, including the Hayashi-Shirafuji (1979) theory, in which the angular momentum of macroscopic spinning bodies generates a significant amount of torsion. They further argue that, by the principle of action equals reaction, one would expect the angular momentum of test bodies to couple to a background torsion field, and therefore the precession of the Gravity Probe B gyroscopes should be affected in these theories by the torsion generated by the Earth. We show that in fact the principle of action equals reaction does not apply to these theories, essentially because the torsion is not an independent dynamical degree of freedom. We examine in detail a generalization of the Hayashi-Shirafuji theory suggested by Mao et al. called Einstein-Hayashi-Shirafuji theory. There are a variety of different versions of this theory, depending on the precise form of the coupling to matter chosen for the torsion. We show that, for any coupling to matter that is compatible with the spin transport equation postulated by Mao et al., the theory has either ghosts or an ill-posed initial-value formulation. These theoretical problems can be avoided by specializing the parameters of the theory and in addition choosing the standard minimal coupling to matter of the torsion tensor. This yields a consistent theory, but one in which the action equals reaction principle is violated, and in which the angular momentum of the gyroscopes does not couple to the Earth's torsion field. Thus, the Einstein-Hayashi-Shirafuji theory does not predict a detectable torsion signal for Gravity Probe B. There may be other torsion theories which do.

  18. Gravity modeling of Cenozoic extensional basins, offshore Vietnam

    E-Print Network [OSTI]

    Mauri, Steven Joseph

    1993-01-01T23:59:59.000Z

    (Yinggehai) basins. Gravity modeling results provide important clues to the controversial tectonic development of Southeast Asia during the Tertiary. Combined Bouguer and free-air gravity maps and residual gravity anomaly maps were generated for the study...

  19. Effects of petroleum distillate on viscosity, density and surface tension of intermediate and heavy crude oils

    E-Print Network [OSTI]

    Abdullayev, Azer

    2009-06-02T23:59:59.000Z

    : San Francisco oil from Columbia with specific gravity of 28o-29o API, Duri oil with gravity of 19o-21o API, Jobo oil with gravity of 8o-9o API and San Ardo oil gravity of 11o-13o API. The additive used in all of the experiments is petroleum distillate...

  20. Ground Gravity Survey At Neal Hot Springs Geothermal Area (Colwell...

    Open Energy Info (EERE)

    Technique Ground Gravity Survey Activity Date 2011 - 2011 Usefulness not indicated DOE-funding Unknown Exploration Basis Gravity surveys were conducted to gain a better...

  1. airborne gravity survey: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Gravity CERN Preprints Summary: Modified gravity theories may provide an alternative to dark energy to explain cosmic acceleration. We argue that the observational program...

  2. Lecture notes for criticality safety

    SciTech Connect (OSTI)

    Fullwood, R.

    1992-03-01T23:59:59.000Z

    These lecture notes for criticality safety are prepared for the training of Department of Energy supervisory, project management, and administrative staff. Technical training and basic mathematics are assumed. The notes are designed for a two-day course, taught by two lecturers. Video tapes may be used at the options of the instructors. The notes provide all the materials that are necessary but outside reading will assist in the fullest understanding. The course begins with a nuclear physics overview. The reader is led from the macroscopic world into the microscopic world of atoms and the elementary particles that constitute atoms. The particles, their masses and sizes and properties associated with radioactive decay and fission are introduced along with Einstein's mass-energy equivalence. Radioactive decay, nuclear reactions, radiation penetration, shielding and health-effects are discussed to understand protection in case of a criticality accident. Fission, the fission products, particles and energy released are presented to appreciate the dangers of criticality. Nuclear cross sections are introduced to understand the effectiveness of slow neutrons to produce fission. Chain reactors are presented as an economy; effective use of the neutrons from fission leads to more fission resulting in a power reactor or a criticality excursion. The six-factor formula is presented for managing the neutron budget. This leads to concepts of material and geometric buckling which are used in simple calculations to assure safety from criticality. Experimental measurements and computer code calculations of criticality are discussed. To emphasize the reality, historical criticality accidents are presented in a table with major ones discussed to provide lessons-learned. Finally, standards, NRC guides and regulations, and DOE orders relating to criticality protection are presented.

  3. Reconstruction of Einstein-Aether Gravity from other Modified Gravity Models

    E-Print Network [OSTI]

    Chayan Ranjit; Ujjal Debnath

    2014-09-08T23:59:59.000Z

    We briefly describe the modified Friedmann equations for Einstein-Aether gravity theory and we find the effective density and pressure. The purpose of our present work is to reconstruction of Einstein-Aether Gravity from other modified gravities like $f(T)$, $f(R)$, $f(G)$, $f(R,T)$ and $f(R,G)$ and check its viability. The scale factor is chosen in power law form. The free function $F(K)$ for Einstein-Aether gravity (where $K$ is proportional to $H^{2}$) have been found in terms for $K$ by the correspondence between Einstein-Aether gravity and other modified gravities and the nature of $F(K)$ vs $K$ have been shown graphically for every cases. Finally, we analyzed the stability of each reconstructed Einstein-Aether gravity model.

  4. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Energy I I' a(STEO)U.S. Coal Stocks atDistillateGulfExportsAPI

  5. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Energy I I' a(STEO)U.S. Coal StocksArea Definitions Key TermsCrudeAPI

  6. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Energy I I' a(STEO)U.S. CoalInputs & UtilizationNetMotorCrudeAPI

  7. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Energy I I' a(STEO)U.S. CoalInputs &Futures PricesAPI

  8. Conserved charges in 3D gravity

    SciTech Connect (OSTI)

    Blagojevic, M.; Cvetkovic, B. [University of Belgrade, Institute of Physics, P. O. Box 57, 11001 Belgrade (Serbia)

    2010-06-15T23:59:59.000Z

    The covariant canonical expression for the conserved charges, proposed by Nester, is tested on several solutions in three-dimensional gravity with or without torsion and topologically massive gravity. In each of these cases, the calculated values of energy momentum and angular momentum are found to satisfy the first law of black hole thermodynamics.

  9. The Superheavy Elements and Anti-Gravity

    SciTech Connect (OSTI)

    Anastasovski, Petar K. [Department of Physics, Faculty of Technology and Metallurgy, Saints Cyril and Methodius University, Skopje (Macedonia, The Former Yugoslav Republic of)

    2004-02-04T23:59:59.000Z

    The essence of any propulsion concept is to overcome gravity. Anti-gravity is a natural means to achieve this. Thus, the technology to pursue anti-gravity, by using superheavy elements, may provide a new propulsion paradigm. The theory of superluminal relativity provides a hypothesis for existence of elements with atomic number up to Z = 145, some of which may possess anti-gravity properties. Analysis results show that curved space-time exists demonstrating both gravitic and anti-gravitic properties not only around nuclei but inside the nuclei as well. Two groups of elements (Z < 64 and 63 < Z <145) exist that demonstrate these capabilities. The nuclei of the first group of elements have the masses with only the property of gravity. The nuclei of the elements of the second group have the masses with both properties: gravity and anti-gravity in two different ranges of curved space-time around the nuclei.. The hypothetical element with Z = 145 is the unique among all elements whose nucleus has only anti-gravity property. It is proposed that this element be named Hawking, in honour of Stephen W. Hawking.

  10. Dual Accretion Disks in Alternate Gravity Theories

    E-Print Network [OSTI]

    James S. Graber

    1997-12-15T23:59:59.000Z

    The interior of gravitationally collapsed objects in alternate theories of gravity in which event horizons and singularities do not occur in strong field gravity were generically investigated. These objects, called red holes, were found to contain dynamic configurations of matter, radiation and spacetime similar to inside out accretion disks well inside the photon orbit. Applications to astrophysical phenomena are briefly described.

  11. Threat Mitigation: The Gravity Tractor

    E-Print Network [OSTI]

    Russell Schweickart; Clark Chapman; Dan Durda; Piet Hut

    2006-08-15T23:59:59.000Z

    The Gravity Tractor (GT) is a fully controlled asteroid deflection concept using the mutual gravity between a robotic spacecraft and an asteroid to slowly accelerate the asteroid in the direction of the "hovering" spacecraft. Based on early warning, provided by ground tracking and orbit prediction, it would be deployed a decade or more prior to a potential impact. Ion engines would be utilized for both the rendezvous with the asteroid and the towing phase. Since the GT does not dock with or otherwise physically contact the asteroid during the deflection process there is no requirement for knowledge of the asteroid's shape, composition, rotation state or other "conventional" characteristics. The GT would first reduce the uncertainty in the orbit of the asteroid via Earth tracking of its radio transponder while station keeping with the asteroid. If, after analysis of the more precise asteroid orbit a deflection is indeed indicated, the GT would "hover" above the surface of the asteroid in the direction of the required acceleration vector for a duration adequate to achieve the desired velocity change. The orbit of the asteroid is continuously monitored throughout the deflection process and the end state is known in real time. The performance envelope for the GT includes most NEOs which experience close gravitational encounters prior to impact and those below 150-200 meters in diameter on a direct Earth impact trajectory.

  12. Solar System constraints to nonminimally coupled gravity

    E-Print Network [OSTI]

    Orfeu Bertolami; Riccardo March; Jorge PŠramos

    2013-06-05T23:59:59.000Z

    We extend the analysis of Chiba, Smith and Erickcek \\cite{CSE} of Solar System constraints on $f(R)$ gravity to a class of nonminimally coupled (NMC) theories of gravity. These generalize $f(R)$ theories by replacing the action functional of General Relativity (GR) with a more general form involving two functions $f^1(R)$ and $f^2(R)$ of the Ricci scalar curvature $R$. While the function $f^1(R)$ is a nonlinear term in the action, analogous to $f(R)$ gravity, the function $f^2(R)$ yields a NMC between the matter Lagrangian density $\\LL_m$ and the scalar curvature. The developed method allows for obtaining constraints on the admissible classes of functions $f^1(R)$ and $f^2(R)$, by requiring that predictions of NMC gravity are compatible with Solar System tests of gravity. We apply this method to a NMC model which accounts for the observed accelerated expansion of the Universe.

  13. CSP 551: Advanced UNIX Programming W. Richard Stevens, UNIX Network Programming, Volume 1: Networking API's, Sockets, and XTI, 2nd edition,

    E-Print Network [OSTI]

    Heller, Barbara

    : Networking API's, Sockets, and XTI, 2nd edition, 1997, Prentice Hall, Englewood Cliffs, NJ. Reference: W a hand-on introduction to UNIX programming topics such as standard application programmer interfaces of UNIX Syllabus · UNIX Standards, Processes, Process Management 9 hours · Files and Directories, System I

  14. 43. Zur aktuellen Situation von Apis mel-lifera meda im Iran. K Bienefeld 1, GH Tah-K Bienefeld1 , GH Tah-

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    43. Zur aktuellen Situation von Apis mel- lifera meda im Iran. K Bienefeld 1, GH Tah-K Bienefeld1, Iran; 3 Institut f√ľr Bienenkunde, Karl-von- Frisch-Weg 2, D-61440 Oberursel, Deutsch- land) Bis zu den in Iran Up to the political changes in 1979, many queens (Midnight and Starline hybrids) were imported

  15. Emergent Horava gravity in graphene

    E-Print Network [OSTI]

    G. E. Volovik; M. A. Zubkov

    2013-07-07T23:59:59.000Z

    First of all, we reconsider the tight - binding model of monolayer graphene, in which the variations of the hopping parameters are allowed. We demonstrate that the emergent 2D Weitzenbock geometry as well as the emergent U(1) gauge field appear. The emergent gauge field is equal to the linear combination of the components of the zweibein. Therefore, we actually deal with the gauge fixed version of the emergent 2+1 D teleparallel gravity. In particular, we work out the case, when the variations of the hopping parameters are due to the elastic deformations, and relate the elastic deformations with the emergent zweibein. Next, we investigate the tight - binding model with the varying intralayer hopping parameters for the multilayer graphene with the ABC stacking. In this case the emergent 2D Weitzenbock geometry and the emergent U(1) gauge field appear as well, the emergent low energy effective field theory has the anisotropic scaling.

  16. Dimensional Reduction in Quantum Gravity

    E-Print Network [OSTI]

    G. 't Hooft

    2009-03-20T23:59:59.000Z

    The requirement that physical phenomena associated with gravitational collapse should be duly reconciled with the postulates of quantum mechanics implies that at a Planckian scale our world is not 3+1 dimensional. Rather, the observable degrees of freedom can best be described as if they were Boolean variables defined on a two-dimensional lattice, evolving with time. This observation, deduced from not much more than unitarity, entropy and counting arguments, implies severe restrictions on possible models of quantum gravity. Using cellular automata as an example it is argued that this dimensional reduction implies more constraints than the freedom we have in constructing models. This is the main reason why so-far no completely consistent mathematical models of quantum black holes have been found. Essay dedicated to Abdus Salam.

  17. Ising-link Quantum Gravity

    E-Print Network [OSTI]

    Tom Fleming; Mark Gross; Ray Renken

    1994-01-04T23:59:59.000Z

    We define a simplified version of Regge quantum gravity where the link lengths can take on only two possible values, both always compatible with the triangle inequalities. This is therefore equivalent to a model of Ising spins living on the links of a regular lattice with somewhat complicated, yet local interactions. The measure corresponds to the natural sum over all 2^links configurations, and numerical simulations can be efficiently implemented by means of look-up tables. In three dimensions we find a peak in the ``curvature susceptibility'' which grows with increasing system size. However, the value of the corresponding critical exponent as well as the behavior of the curvature at the transition differ from that found by Hamber and Williams for the Regge theory with continuously varying link lengths.

  18. Gravity-Induced Vacuum Dominance

    SciTech Connect (OSTI)

    Lima, William C. C.; Vanzella, Daniel A. T. [Instituto de Fisica de Sao Carlos, Universidade de Sao Paulo, Caixa Postal 369, CEP 15980-900, Sao Carlos, SP (Brazil)

    2010-04-23T23:59:59.000Z

    It has been widely believed that, except in very extreme situations, the influence of gravity on quantum fields should amount to just small, subdominant contributions. This view seemed to be endorsed by the seminal results obtained over the last decades in the context of renormalization of quantum fields in curved spacetimes. Here, however, we argue that this belief is false by showing that there exist well-behaved spacetime evolutions where the vacuum energy density of free quantum fields is forced, by the very same background spacetime, to become dominant over any classical energy-density component. By estimating the time scale for the vacuum energy density to become dominant, and therefore for backreaction on the background spacetime to become important, we argue that this (infrared) vacuum dominance may bear unexpected astrophysical and cosmological implications.

  19. Newtonian gravity, red shift, confinement, asymptotic freedom and quarks oscillations

    E-Print Network [OSTI]

    G. Quznetsov

    2008-10-18T23:59:59.000Z

    Quarks oscillations give the Newtonian gravity law, the red shift, the confinement and the asymptotic freedom.

  20. Loop Quantum Gravity 1. Classical framework : Ashtekar-Barbero connection

    E-Print Network [OSTI]

    Sart, Remi

    gravity Why Quantum Gravity ? Gravitation vs. Quantum Physics : the two infinities Gravitation : large Quantum Gravity ? Gravitation vs. Quantum Physics : the two infinities Gravitation : large scales-perturbative renormalization Gravity is not a fundamental theory but it is effective (law energy) · it has to be modified

  1. EndNote X5 Basics What is EndNote?

    E-Print Network [OSTI]

    will need to choose between two installation types ≠ Typical or Custom. If you choose Typical, you. This guide will show you the following basic steps for using EndNote: Opening or creating an EndNote Library Adding bibliographic references or citations to your library Using EndNote with Microsoft Word

  2. Fractal Structure of Loop Quantum Gravity

    E-Print Network [OSTI]

    Leonardo Modesto

    2008-12-11T23:59:59.000Z

    In this paper we have calculated the spectral dimension of loop quantum gravity (LQG) using simple arguments coming from the area spectrum at different length scales. We have obtained that the spectral dimension of the spatial section runs from 2 to 3, across a 1.5 phase, when the energy of a probe scalar field decrees from high to low energy. We have calculated the spectral dimension of the space-time also using results from spin-foam models, obtaining a 2-dimensional effective manifold at hight energy. Our result is consistent with other two approach to non perturbative quantum gravity: causal dynamical triangulation and asymptotic safety quantum gravity.

  3. CDT meets Horava-Lifshitz gravity

    E-Print Network [OSTI]

    J. Ambjorn; A. Gorlich; S. Jordan; J. Jurkiewicz; R. Loll

    2010-04-06T23:59:59.000Z

    The theory of causal dynamical triangulations (CDT) attempts to define a nonperturbative theory of quantum gravity as a sum over space-time geometries. One of the ingredients of the CDT framework is a global time foliation, which also plays a central role in the quantum gravity theory recently formulated by Ho\\v{r}ava. We show that the phase diagram of CDT bears a striking resemblance with the generic Lifshitz phase diagram appealed to by Ho\\v{r}ava. We argue that CDT might provide a unifying nonperturbative framework for anisotropic as well as isotropic theories of quantum gravity.

  4. Gauge Gravity and Space-Time

    E-Print Network [OSTI]

    Ning Wu

    2012-07-11T23:59:59.000Z

    When we discuss problems on gravity, we can not avoid some fundamental physical problems, such as space-time, inertia, and inertial reference frame. The goal of this paper is to discuss the logic system of gravity theory and the problems of space-time, inertia, and inertial reference frame. The goal of this paper is to set up the theory on space-time in gauge theory of gravity. Based on this theory, it is possible for human kind to manipulate physical space-time on earth, and produce a machine which can physically prolong human's lifetime.

  5. TESLA-LNF TECHNICAL NOTE Divisione Acceleratori

    E-Print Network [OSTI]

    TESLA-LNF TECHNICAL NOTE _____________ Divisione Acceleratori Frascati, November 20, 2003 Note: TESLA Report 2003-26 TESLA DAMPING RING: INJECTION/EXTRACTION SCHEMES WITH RF DEFLECTORS D. Alesini, S/extraction schemes in the Damping Ring of TESLA using RF deflectors. We illustrate different possible solutions using

  6. DANE TECHNICAL NOTE INFN -LNF, Accelerator Division

    E-Print Network [OSTI]

    Istituto Nazionale di Fisica Nucleare (INFN)

    (Chairman) F. Willeke, DESY 1. Follow up of previous Meeting The first report by the DANE Machine AdvisoryK K DANE TECHNICAL NOTE INFN - LNF, Accelerator Division Frascati, May 11, 2000 Note: G-55 Report by DANE Machine Advisory Panel on 2nd Meeting held on 4-5 May 2000 J. M. Jowett, CERN S. Myers, CERN

  7. DANE TECHNICAL NOTE INFN -LNF, Accelerator Division

    E-Print Network [OSTI]

    Istituto Nazionale di Fisica Nucleare (INFN)

    KKKK KKKK DANE TECHNICAL NOTE INFN - LNF, Accelerator Division Frascati, January 13, 1993 Note: IR to see how much heat has to be removed. The two main sources of heat are: 1) Resistive losses due. Technol. 5(6) 3446 (1987). #12;IR-1 pg. 6 APPENDIX IA Losses in the I.R. 1) Resistive losses in Be: dp dz

  8. BNL/SNS TECHNICAL NOTE R. Witkover

    E-Print Network [OSTI]

    BNL/SNS TECHNICAL NOTE NO. 049 R. Witkover September 23, 1998 ALTERNATING GRADIENT SYNCHROTRON-In-Gap" Monitor for the Spallation Neutron Source #12;SNS Technical Note Considerations in Designing a "Beam of approximately 550 nsec. With a design intensity of 1014 per pulse, un-controlled losses must be kept to a level

  9. DANE TECHNICAL NOTE INFN -LNF, Accelerator Division

    E-Print Network [OSTI]

    Istituto Nazionale di Fisica Nucleare (INFN)

    KKKK KKKK DANE TECHNICAL NOTE INFN - LNF, Accelerator Division Frascati, October 26, 1994 Note: RF enough (i.e. if the parasitic losses are low with respect to the energy left by each passing bunch-zero longitudinal electric field on the cavity axis. Being azimuthally symmetric, it is possible to calculate them

  10. DANE TECHNICAL NOTE INFN -LNF, Accelerator Division

    E-Print Network [OSTI]

    Istituto Nazionale di Fisica Nucleare (INFN)

    K K DANE TECHNICAL NOTE INFN - LNF, Accelerator Division Frascati, July 16, 1996 Note: RF-19 losses and prevents to reach the operating voltage range. The RF cavity of the DANE -Factory Accumulator and electrical conductivities. Multipactoring (MP) is a phenomenon of resonant electron discharge which can occur

  11. DANE TECHNICAL NOTE INFN -LNF, Accelerator Division

    E-Print Network [OSTI]

    Istituto Nazionale di Fisica Nucleare (INFN)

    K K DANE TECHNICAL NOTE INFN - LNF, Accelerator Division Frascati, December 14, 1995 Note: CD-5, are also needed in order to minimise the losses. In order to use this device as a transverse kicker, two) excitation. #12;CD-5 pg. 3 The combined magnetic and electric field gives a net deflecting Lorentz force

  12. DANE TECHNICAL NOTE INFN -LNF, Accelerator Division

    E-Print Network [OSTI]

    Istituto Nazionale di Fisica Nucleare (INFN)

    KKKK KKKK DANE TECHNICAL NOTE INFN - LNF, Accelerator Division Frascati, Sept. 26, 1991 Note: RF-4 and vacuum simpler and less expensive. The cavity will be made of copper which has better electrical and thermal conductivity to reduce the RF losses and keep the cooling easier. #12;RF-4 pg. 2 Multipacting (MP

  13. Bounds on quantum communication via Newtonian gravity

    E-Print Network [OSTI]

    D. Kafri; G. J. Milburn; J. M. Taylor

    2014-10-08T23:59:59.000Z

    Newtonian gravity yields specific observable consequences, the most striking of which is the emergence of a $1/r^2$ force. In so far as communication can arise via such interactions between distant particles, we can ask what would be expected for a theory of gravity that only allows classical communication. Many heuristic suggestions for gravity-induced decoherence have this restriction implicitly or explicitly in their construction. Here we show that communication via a $1/r^2$ force has a minimum noise induced in the system when the communication cannot convey quantum information, in a continuous time analogue to Bell's inequalities. Our derived noise bounds provide tight constraints from current experimental results on any theory of gravity that does not allow quantum communication.

  14. The Shape of a Gravity Finger

    SciTech Connect (OSTI)

    Zhan, Lang; Yortsos, Yanis

    2000-09-11T23:59:59.000Z

    A new gravity finger model was proposed in this report in the absence of interfacial tension but in the presence of gravities. This model considered differences in density and viscosity of the two fluids. Thus, it was able to represent both stable and unstable displacements, and the finger development along either the upper or the bottom walls of a channel. This solution recovers the Saffman - Taylar solution if gravity is neglected. The results of the solution are very similar to the solutions proposed by Brener et al. for the gravity number up to 10. The solution provided in this work only has one free parameter while the solution of Brener et al. has three.

  15. Gravity waves from vortex dipoles and jets

    E-Print Network [OSTI]

    Wang, Shuguang

    2009-05-15T23:59:59.000Z

    The dissertation first investigates gravity wave generation and propagation from jets within idealized vortex dipoles using a nonhydrostatic mesoscale model. Several initially balanced and localized jets induced by vortex dipoles are examined here...

  16. State sum models for quantum gravity

    E-Print Network [OSTI]

    John W. Barrett

    2000-10-12T23:59:59.000Z

    This paper reviews the construction of quantum field theory on a 4-dimensional spacetime by combinatorial methods, and discusses the recent developments in the direction of a combinatorial construction of quantum gravity.

  17. Energy conditions in f(R) gravity

    SciTech Connect (OSTI)

    Santos, J. [Universidade Federal do Rio Grande do Norte, Departamento de Fisica C.P. 1641, 59072-970 Natal-Rio Grande do Norte (Brazil); Departamento de Astronomia, Observatorio Nacional, 20921-400 Rio de Janeiro-Rio de Janeiro (Brazil); Centro Brasileiro de Pesquisas Fisicas, Rua Dr. Xavier Sigaud 150, 22290-180 Rio de Janeiro-Rio de Janeiro (Brazil); Alcaniz, J. S.; Carvalho, F. C. [Departamento de Astronomia, Observatorio Nacional, 20921-400 Rio de Janeiro-Rio de Janeiro (Brazil); Reboucas, M. J. [Centro Brasileiro de Pesquisas Fisicas, Rua Dr. Xavier Sigaud 150, 22290-180 Rio de Janeiro-Rio de Janeiro (Brazil)

    2007-10-15T23:59:59.000Z

    In order to shed some light on the current discussion about f(R)-gravity theories we derive and discuss the bounds imposed by the energy conditions on a general f(R) functional form. The null and strong energy conditions in this framework are derived from Raychaudhuri's equation along with the requirement that gravity is attractive, whereas the weak and dominant energy conditions are stated from a comparison with the energy conditions that can be obtained in a direct approach via an effective energy-momentum tensor for f(R) gravity. As a concrete application of the energy conditions to locally homogeneous and isotropic f(R) cosmology, the recent estimated values of the deceleration and jerk parameters are used to examine the bounds from the weak energy condition on the parameters of two families of f(R)-gravity theories.

  18. Cosmology of modified (but second order) gravity

    E-Print Network [OSTI]

    Tomi S. Koivisto

    2009-10-21T23:59:59.000Z

    This is a brief review of modified gravity cosmologies. Generically extensions of gravity action involve higher derivative terms, which can result in ghosts and instabilities. There are three ways to circumvent this: Chern-Simons terms, first order variational principle and nonlocality. We consider recent cosmological applications of these three classes of modified gravity models, in particular to the dark energy problem. The viable parameter spaces can be very efficiently constrained by taking into account cosmological data from all epochs in addition to Solar system tests and stability considerations. We make some new remarks concerning so called algebraic scalar-tensor theories, biscalar reformulation of nonlocal actions involving the inverse d'Alembertian, and a possible covariant formulation holographic cosmology with nonperturbative gravity.

  19. Energy conditions in f(R)-gravity

    E-Print Network [OSTI]

    J. Santos; J. S. Alcaniz; M. J. Reboucas; F. C. Carvalho

    2007-09-06T23:59:59.000Z

    In order to shed some light on the current discussion about f(R)-gravity theories we derive and discuss the bounds imposed by the energy conditions on a general f(R) functional form. The null and strong energy conditions in this framework are derived from the Raychaudhuri's equation along with the requirement that gravity is attractive, whereas the weak and dominant energy conditions are stated from a comparison with the energy conditions that can be obtained in a direct approach via an effective energy-momentum tensor for f(R)-gravity. As a concrete application of the energy conditions to locally homogeneous and isotropic f(R)-cosmology, the recent estimated values of the deceleration and jerk parameters are used to examine the bounds from the weak energy condition on the parameters of two families of f(R)-gravity theories.

  20. Test particle motion in modified gravity theories

    E-Print Network [OSTI]

    Mahmood Roshan

    2013-02-05T23:59:59.000Z

    We derive the equations of motion of an electrically neutral test particle for modified gravity theories in which the covariant divergence of the ordinary matter energy-momentum tensor dose not vanish (i.e. $\

  1. A new vacuum for Loop Quantum Gravity

    E-Print Network [OSTI]

    Bianca Dittrich; Marc Geiller

    2015-05-05T23:59:59.000Z

    We construct a new vacuum for loop quantum gravity, which is dual to the Ashtekar-Lewandowski vacuum. Because it is based on BF theory, this new vacuum is physical for $(2+1)$-dimensional gravity, and much closer to the spirit of spin foam quantization in general. To construct this new vacuum and the associated representation of quantum observables, we introduce a modified holonomy-flux algebra which is cylindrically consistent with respect to the notion of refinement by time evolution suggested in [1]. This supports the proposal for a construction of a physical vacuum made in [1,2], also for $(3+1)$-dimensional gravity. We expect that the vacuum introduced here will facilitate the extraction of large scale physics and cosmological predictions from loop quantum gravity.

  2. Antimatter-Gravity Couplings, and Lorentz Symmetry

    E-Print Network [OSTI]

    Tasson, Jay D

    2015-01-01T23:59:59.000Z

    Implications of possible CPT and Lorentz violation for antimatter-gravity experiments as well as other antimatter tests are considered in the context of the general field-theory-based framework of the Standard-Model Extension (SME).

  3. Antimatter-Gravity Couplings, and Lorentz Symmetry

    E-Print Network [OSTI]

    Jay D. Tasson

    2015-01-27T23:59:59.000Z

    Implications of possible CPT and Lorentz violation for antimatter-gravity experiments as well as other antimatter tests are considered in the context of the general field-theory-based framework of the Standard-Model Extension (SME).

  4. Oblique reflections of internal gravity wave beams

    E-Print Network [OSTI]

    Karimi, Hussain H. (Hussain Habibullah)

    2012-01-01T23:59:59.000Z

    We study nonlinear effects in reflections of internal gravity wave beams in a continuously stratified liquid which are incident upon a uniform slope at an oblique angle. Wave motion in a stratified fluid medium is unique ...

  5. Gravity Recovery and Interior Laboratory (GRAIL) Launch

    E-Print Network [OSTI]

    Gravity Recovery and Interior Laboratory (GRAIL) Launch Press Kit/AUGUst 2011 #12;http of its four channels to AC-3, making each channel's secondary audio MPEG 1 Layer II. For digital downlink

  6. Anisotropic induced gravity and inflationary universe

    E-Print Network [OSTI]

    W. F. Kao

    2006-12-09T23:59:59.000Z

    Existence and stability analysis of the Kantowski-Sachs type universe in a higher derivative induced gravity theory is studied in details. Existence of one stable mode and one unstable mode is shown to be in favor of the inflationary universe. As a result, the de Sitter background can be made to be stable against anisotropic perturbations with proper constraints imposed on the coupling constants of the induced gravity model.

  7. Gravity waves from cosmic bubble collisions

    SciTech Connect (OSTI)

    Salem, Michael P.; Saraswat, Prashant; Shaghoulian, Edgar, E-mail: mpsalem@stanford.edu, E-mail: ps88@stanford.edu, E-mail: edgars@stanford.edu [Stanford Institute for Theoretical Physics and Department of Physics, Stanford University, Stanford, California 94305 (United States)

    2013-02-01T23:59:59.000Z

    Our local Hubble volume might be contained within a bubble that nucleated in a false vacuum with only two large spatial dimensions. We study bubble collisions in this scenario and find that they generate gravity waves, which are made possible in this context by the reduced symmetry of the global geometry. These gravity waves would produce B-mode polarization in the cosmic microwave background, which could in principle dominate over the inflationary background.

  8. The shape dynamics description of gravity

    E-Print Network [OSTI]

    Tim Koslowski

    2015-01-13T23:59:59.000Z

    Classical gravity can be described as a relational dynamical system without ever appealing to spacetime or its geometry. This description is the so-called shape dynamics description of gravity. The existence of relational first principles from which the shape dynamics description of gravity can be derived is a motivation to consider shape dynamics (rather than GR) as the fundamental description of gravity. Adopting this point of view leads to the question: What is the role of spacetime in the shape dynamics description of gravity? This question contains many aspects: Compatibility of shape dynamics with the description of gravity in terms of spacetime geometry, the role of local Minkowski space, universality of spacetime geometry and the nature of quantum particles, which can no longer be assumed to be irreducible representations of the Poincare group. In this contribution I derive effective spacetime structures by considering how matter fluctuations evolve along with shape dynamics. This evolution reveals an "experienced spacetime geometry." This leads (in an idealized approximation) to local Minkowski space and causal relations. The small scale structure of the emergent geometric picture depends on the specific probes used to experience spacetime, which limits the applicability of effective spacetime to describe shape dynamics. I conclude with discussing the nature of quantum fluctuations (particles) in shape dynamics and how local Minkowski spacetime emerges from the evolution of quantum particles.

  9. Gravity as Quantum Foam In-Flow

    E-Print Network [OSTI]

    Reginald T Cahill

    2003-07-01T23:59:59.000Z

    The new information-theoretic Process Physics provides an explanation of space as a quantum foam system in which gravity is an inhomogeneous flow of the quantum foam into matter. The older Newtonian and General Relativity theories for gravity are analysed. It is shown that Newtonian gravity may be written in the form of an in-flow. General Relativity is also analysed as an in-flow, for those cases where it has been tested. An analysis of various experimental data demonstrates that absolute motion relative to space has been observed by Michelson and Morley, Miller, Illingworth, Jaseja et al, Torr and Kolen, and by DeWitte. The Dayton Miller and Roland DeWitte data also reveal the in-flow of space into matter which manifests as gravity. The experimental data suggests that the in-flow is turbulent, which amounts to the observation of a gravitational wave phenomena. A new in-flow theory of gravity is proposed which passes all the tests that General Relativity was claimed to have passed, but as well the new theory suggests that the so-called spiral galaxy rotation-velocity anomaly may be explained without the need of `dark matter'. Various other gravitational anomalies also appear to be explainable. Newtonian gravity appears to be strictly valid only outside of spherically symmetric matter systems.

  10. Quantum gravity and inventory accumulation

    E-Print Network [OSTI]

    Scott Sheffield

    2011-08-10T23:59:59.000Z

    We begin by studying inventory accumulation at a LIFO (last-in-first-out) retailer with two products. In the simplest version, the following occur with equal probability at each time step: first product ordered, first product produced, second product ordered, second product produced. The inventory thus evolves as a simple random walk on Z^2. In more interesting versions, a p fraction of customers orders the "freshest available" product regardless of type. We show that the corresponding random walks scale to Brownian motions with diffusion matrices depending on p. We then turn our attention to the critical Fortuin-Kastelyn random planar map model, which gives, for each q>0, a probability measure on random (discretized) two-dimensional surfaces decorated by loops, related to the q-state Potts model. A longstanding open problem is to show that as the discretization gets finer, the surfaces converge in law to a limiting (loop-decorated) random surface. The limit is expected to be a Liouville quantum gravity surface decorated by a conformal loop ensemble, with parameters depending on q. Thanks to a bijection between decorated planar maps and inventory trajectories (closely related to bijections of Bernardi and Mullin), our results about the latter imply convergence of the former in a particular topology. A phase transition occurs at p = 1/2, q=4.

  11. Encoding field theories into gravities

    E-Print Network [OSTI]

    Aoki, Sinya; Onogi, Tetsuya

    2015-01-01T23:59:59.000Z

    We propose a method, which encodes the information of a $d$ dimensional quantum field theory into a $d+1$ dimensional gravity in the $1/N$ expansion. We first construct a $d+1$ dimensional field theory from the $d$ dimensional one via the gradient flow equation, whose flow time $t$ represents the energy scale of the system such that $t\\rightarrow 0$ corresponds to the ultra-violet (UV) while $t\\rightarrow\\infty$ to the infra-red (IR). We then define the induced metric from $d+1$ dimensional field operators. We show that the metric defined in this way becomes classical in the large $N$ limit, in a sense that quantum fluctuations of the metric are suppressed as $1/N$ due to the large $N$ factorization property. As a concrete example, we apply our method to the O(N) non-linear $\\sigma$ model in two dimensions. We calculate the induced metric in three dimensions, which is shown to describe De Sitter (dS) or Anti De Sitter (AdS) space in the massless limit, where the mass is dynamically generated in the O(N) non-l...

  12. Workshop Notes from ""Compressed Natural Gas and Hydrogen Fuels...

    Broader source: Energy.gov (indexed) [DOE]

    Workshop Notes from ""Compressed Natural Gas and Hydrogen Fuels: Lessons Learned for the Safe Deployment of Vehicles"" Workshop, December 10-11, 2009 Workshop Notes from...

  13. Gravity and Anti-gravity of Fermions: the Unification of Dark Matter and Dark Energy

    E-Print Network [OSTI]

    Chen, X S

    2005-01-01T23:59:59.000Z

    Massive gravity with second and fourth derivatives is shown to give both attractive and repulsive gravity between fermions. In contrast to the attractive gravity correlated with energy-momentum tensor, the repulsive gravity is proportional to the graviton mass. Therefore, weakly interacting fermions with energy smaller than the graviton mass are both dark matter and dark energy: Their overall gravity is attractive with normal matter but repulsive among themselves. Detailed analyses reveal that this unified dark scenario can properly account for the observed dark matter/energy phenomena: galaxy rotation curves, transition from early cosmic deceleration to recent acceleration; and naturally overcome other dark scenarios' difficulties: the substructure and cuspy core problems, the difference of dark halo distributions in galaxies and clusters, and the cosmic coincidence.

  14. A Kinetic Theory Approach to Quantum Gravity

    E-Print Network [OSTI]

    B. L. Hu

    2002-04-22T23:59:59.000Z

    We describe a kinetic theory approach to quantum gravity -- by which we mean a theory of the microscopic structure of spacetime, not a theory obtained by quantizing general relativity. A figurative conception of this program is like building a ladder with two knotted poles: quantum matter field on the right and spacetime on the left. Each rung connecting the corresponding knots represent a distinct level of structure. The lowest rung is hydrodynamics and general relativity; the next rung is semiclassical gravity, with the expectation value of quantum fields acting as source in the semiclassical Einstein equation. We recall how ideas from the statistical mechanics of interacting quantum fields helped us identify the existence of noise in the matter field and its effect on metric fluctuations, leading to the establishment of the third rung: stochastic gravity, described by the Einstein-Langevin equation. Our pathway from stochastic to quantum gravity is via the correlation hierarchy of noise and induced metric fluctuations. Three essential tasks beckon: 1) Deduce the correlations of metric fluctuations from correlation noise in the matter field; 2) Reconstituting quantum coherence -- this is the reverse of decoherence -- from these correlation functions 3) Use the Boltzmann-Langevin equations to identify distinct collective variables depicting recognizable metastable structures in the kinetic and hydrodynamic regimes of quantum matter fields and how they demand of their corresponding spacetime counterparts. This will give us a hierarchy of generalized stochastic equations -- call them the Boltzmann-Einstein hierarchy of quantum gravity -- for each level of spacetime structure, from the macroscopic (general relativity) through the mesoscopic (stochastic gravity) to the microscopic (quantum gravity).

  15. Notes on Slovene and Slavic Etymology

    E-Print Network [OSTI]

    Hamp, Eric P.

    1997-01-01T23:59:59.000Z

    The notes present critiques of F. Bezlaj's Etymological Dictionary of the Slovene Language and new proposals for the etymology of the words krma 'animal feed', Krma (toponym), kaöelj 'cough', ogenj 'flame, fire', and oglje 'charcoal'....

  16. A. La Rosa Lecture Notes APPLIED OPTICS

    E-Print Network [OSTI]

    A. La Rosa Lecture Notes APPLIED OPTICS _______________________________________________________________________________ The variational principle and ray propagation The ray equation Propagation on a lenslike media: GRIN lenses Ref: A. Yariv and P. Yeh, "Photonics," Oxford University Press. Chapter 2. The ray equation obtained from

  17. A. La Rosa Lecture Notes APPLIED OPTICS

    E-Print Network [OSTI]

    _______________________________________________________________________________ Rays and Optical beams Ref: A. Yariv and P. Yeh, "Photonics," Oxford University Press. Chapter 2. IA. La Rosa Lecture Notes APPLIED OPTICS. Ray Matrices I.A Special cases Case: Propagation through a thin lens Case: Propagation through

  18. Data Mining and Knowledge Discovery: Practice Notes

    E-Print Network [OSTI]

    Novak, Petra Kralj

    1 Data Mining and Knowledge Discovery: Practice Notes Petra Kralj Novak Petra.Kralj.Novak@ijs.si and exam ∑ 2013/1/15: Written exam, seminar proposal discussion ∑ 2013/2/12: Data mining seminar

  19. Data Mining and Knowledge Discovery: Practice Notes

    E-Print Network [OSTI]

    Novak, Petra Kralj

    1 Data Mining and Knowledge Discovery: Practice Notes Petra Kralj Novak Petra.Kralj.Novak@ijs.si on Weka 3: Descriptive data mining ≠ Discussion about seminars and exam ∑ 2013/12/16: Written exam

  20. Lecture Notes in Secret Sharing Carles Padro

    E-Print Network [OSTI]

    Lecture Notes in Secret Sharing Carles Padrīo Nanyang Technological University, Singapore Version 2.7 Exercises . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 2 Secret Sharing.2 Secret Sharing Schemes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 2.3 Threshold Secret

  1. Gravity as Quantum Foam In-Flow

    E-Print Network [OSTI]

    Cahill, R T

    2003-01-01T23:59:59.000Z

    The new information-theoretic Process Physics provides an explanation of space as a quantum foam system in which gravity is an inhomogeneous flow of the quantum foam into matter. The older Newtonian and General Relativity theories for gravity are analysed. It is shown that Newtonian gravity may be written in the form of an in-flow. General Relativity is also analysed as an in-flow, for those cases where it has been tested. An analysis of various experimental data demonstrates that absolute motion relative to space has been observed by Michelson and Morley, Miller, Illingworth, Jaseja et al, Torr and Kolen, and by DeWitte. The Dayton Miller and Roland DeWitte data also reveal the in-flow of space into matter which manifests as gravity. The experimental data suggests that the in-flow is turbulent, which amounts to the observation of a gravitational wave phenomena. A new in-flow theory of gravity is proposed which passes all the tests that General Relativity was claimed to have passed, but as well the new theory...

  2. Solar System Constraints on Disformal Gravity Theories

    E-Print Network [OSTI]

    Hiu Yan Ip; Jeremy Sakstein; Fabian Schmidt

    2015-07-02T23:59:59.000Z

    Disformal theories of gravity are scalar-tensor theories where the scalar couples derivatively to matter via the Jordan frame metric. These models have recently attracted interest in the cosmological context since they admit accelerating solutions. We derive the solution for a static isolated mass in generic disformal gravity theories and transform it into the parameterised post-Newtonian form. This allows us to investigate constraints placed on such theories by local tests of gravity. The tightest constraints come from preferred-frame effects due to the motion of the Solar System with respect to the evolving cosmological background field. The constraints we obtain improve upon the previous solar system constraints by two orders of magnitude, and constrain the scale of the disformal coupling for generic models to $\\mathcal{M} \\gtrsim 100$ eV. These constraints render all disformal effects irrelevant for cosmology.

  3. Quantum gravity effects in the Kerr spacetime

    SciTech Connect (OSTI)

    Reuter, M. [Institute of Physics, University of Mainz, Staudingerweg 7, D-55099 Mainz (Germany); Tuiran, E. [Departamento de Fisica, Universidad del Norte, Km 5 via a Puerto Colombia, AA-1569 Barranquilla (Colombia)

    2011-02-15T23:59:59.000Z

    We analyze the impact of the leading quantum gravity effects on the properties of black holes with nonzero angular momentum by performing a suitable renormalization group improvement of the classical Kerr metric within quantum Einstein gravity. In particular, we explore the structure of the horizons, the ergosphere, and the static limit surfaces as well as the phase space available for the Penrose process. The positivity properties of the effective vacuum energy-momentum tensor are also discussed and the 'dressing' of the black hole's mass and angular momentum are investigated by computing the corresponding Komar integrals. The pertinent Smarr formula turns out to retain its classical form. As for their thermodynamical properties, a modified first law of black-hole thermodynamics is found to be satisfied by the improved black holes (to second order in the angular momentum); the corresponding Bekenstein-Hawking temperature is not proportional to the surface gravity.

  4. Holographic Superconductors in Quasi-topological Gravity

    E-Print Network [OSTI]

    Xiao-Mei Kuang; Wei-Jia Li; Yi Ling

    2010-12-05T23:59:59.000Z

    In this paper we study (3+1) dimensional holographic superconductors in quasi-topological gravity which is recently proposed by R. Myers {\\it et.al.}. Through both analytical and numerical analysis, we find in general the condensation becomes harder with the increase of coupling parameters of higher curvature terms. In particular, comparing with those in ordinary Gauss-Bonnet gravity, we find that positive cubic corrections in quasi-topological gravity suppress the condensation while negative cubic terms make it easier. We also calculate the conductivity numerically for various coupling parameters. It turns out that the universal relation of $\\omega_g/T_c\\simeq 8$ is unstable and this ratio becomes larger with the increase of the coupling parameters. A brief discussion on the condensation from the CFT side is also presented.

  5. Solar system constraints on alternative gravity theories

    E-Print Network [OSTI]

    Sumanta Chakraborty; Soumitra Sengupta

    2014-01-14T23:59:59.000Z

    The perihelion precession of planetary orbits and the bending angle of null geodesics are estimated for different gravity theories in string-inspired models. It is shown that, for dilaton coupled gravity, the leading order measure in the angle of bending of light comes purely from vacuum expectation value of the dilaton field which may be interpreted as an indicator of a dominant stringy effect over the curvature effect. We arrive at similar results for spherically symmetric solution in quadratic gravity. We also present the perihelion shift and bending of light in the Einstein-Maxwell-Gauss-Bonnet theory with special reference to the Casimir effect and Damour-Polyakov mechanism. Numerical bounds to different coupling parameters in these models are estimated.

  6. Gauge theory of gravity and supergravity

    SciTech Connect (OSTI)

    Kaul, Romesh K. [Institute of Mathematical Sciences, Chennai 600 113 (India)

    2006-03-15T23:59:59.000Z

    We present a formulation of gravity in terms of a theory based on complex SU(2) gauge fields with a general coordinate invariant action functional quadratic in the field strength. Self-duality or anti-self-duality of the field strength emerges as a constraint from the equations of motion of this theory. This in turn leads to Einstein gravity equations for a dilaton and an axion conformally coupled to gravity for the self-dual constraint. The analysis has also been extended to N=1 and 2 super Yang-Mills theory of complex SU(2) gauge fields. This leads to, besides other equations of motion, self-duality/anti-self-duality of generalized supercovariant field strengths. The self-dual case is then shown to yield as its solutions N=1, 2 supergravity equations, respectively.

  7. Solar System Constraints on Disformal Gravity Theories

    E-Print Network [OSTI]

    Ip, Hiu Yan; Schmidt, Fabian

    2015-01-01T23:59:59.000Z

    Disformal theories of gravity are scalar-tensor theories where the scalar couples derivatively to matter via the Jordan frame metric. These models have recently attracted interest in the cosmological context since they admit accelerating solutions. We derive the solution for a static isolated mass in generic disformal gravity theories and transform it into the parameterised post-Newtonian form. This allows us to investigate constraints placed on such theories by local tests of gravity. The tightest constraints come from preferred-frame effects due to the motion of the Solar System with respect to the evolving cosmological background field. The constraints we obtain improve upon the previous solar system constraints by two orders of magnitude, and constrain the scale of the disformal coupling for generic models to $\\mathcal{M} \\gtrsim 100$ eV. These constraints render all disformal effects irrelevant for cosmology.

  8. Entropic force, noncommutative gravity, and ungravity

    SciTech Connect (OSTI)

    Nicolini, Piero [Frankfurt Institute for Advanced Studies (FIAS), Institut fuer Theoretische Physik, Johann Wolfgang Goethe-Universitaet, Ruth-Moufang-Strasse 1, 60438 Frankfurt am Main (Germany)

    2010-08-15T23:59:59.000Z

    After recalling the basic concepts of gravity as an emergent phenomenon, we analyze the recent derivation of Newton's law in terms of entropic force proposed by Verlinde. By reviewing some points of the procedure, we extend it to the case of a generic quantum gravity entropic correction to get compelling deviations to the Newton's law. More specifically, we study: (1) noncommutative geometry deviations and (2) ungraviton corrections. As a special result in the noncommutative case, we find that the noncommutative character of the manifold would be equivalent to the temperature of a thermodynamic system. Therefore, in analogy to the zero temperature configuration, the description of spacetime in terms of a differential manifold could be obtained only asymptotically. Finally, we extend the Verlinde's derivation to a general case, which includes all possible effects, noncommutativity, ungravity, asymptotically safe gravity, electrostatic energy, and extra dimensions, showing that the procedure is solid versus such modifications.

  9. Emergence in Holographic Scenarios for Gravity

    E-Print Network [OSTI]

    Dieks, Dennis; de Haro, Sebastian

    2015-01-01T23:59:59.000Z

    'Holographic' relations between theories have become an important theme in quantum gravity research. These relations entail that a theory without gravity is equivalent to a gravitational theory with an extra spatial dimension. The idea of holography was first proposed in 1993 by Gerard 't Hooft on the basis of his studies of evaporating black holes. Soon afterwards the holographic 'AdS/CFT' duality was introduced, which since has been intensively studied in the string theory community and beyond. Recently, Erik Verlinde has proposed that even Newton's law of gravitation can be related holographically to the 'thermodynamics of information' on screens. We discuss these scenarios, with special attention to the status of the holographic relation in them and to the question of whether they make gravity and spacetime emergent. We conclude that only Verlinde's scheme straightfowardly instantiates emergence. However, assuming a non-standard interpretation of AdS/CFT may create room for the emergence of spacetime and ...

  10. Theoretical and experimental study of nonlinear internal gravity wave beams

    E-Print Network [OSTI]

    Tabaei Befrouei, Ali, 1974-

    2005-01-01T23:59:59.000Z

    Continuously stratified fluids, like the atmosphere and the oceans, support internal gravity waves due to the effect of buoyancy. This type of wave motion is anisotropic since gravity provides a preferred direction. As a ...

  11. ENERGIES RENOVABLES NOTES FINALS 2006 COGNOMS, NOM ASSISTNCIA TREBALL NOTA

    E-Print Network [OSTI]

    Batiste, Oriol

    ENERGIES RENOVABLES NOTES FINALS 2006 COGNOMS, NOM ASSIST√?NCIA TREBALL NOTA ALCOVERRO VIDAL, MARCEL

  12. Exact solutions of three dimensional black holes: Einstein gravity vs F(R) gravity

    E-Print Network [OSTI]

    S. H. Hendi; B. Eslam Panah; R. Saffari

    2014-10-28T23:59:59.000Z

    In this paper, we consider Einstein gravity in the presence of a class of nonlinear electrodynamics, called power Maxwell invariant (PMI). We take into account $(2+1)$-dimensional spacetime in Einstein-PMI gravity and obtain its black hole solutions. Then, we regard pure $F(R)$ gravity as well as $F(R)$-conformally invariant Maxwell theory to obtain exact solutions of the field equations with black hole interpretation. Finally, we investigate the conserved and thermodynamic quantities and discuss about the first law of thermodynamics for the mentioned gravitational models.

  13. Testing a Dilaton Gravity Model using Nucleosynthesis

    E-Print Network [OSTI]

    Sibel Boran; Emre Onur Kahya

    2014-09-05T23:59:59.000Z

    Big Bang Nucleosynthesis (BBN) offers one of the most strict evidences for the Lambda-CDM cosmology at present, as well as the Cosmic Microwave Background (CMB) radiation. In this work, our main aim is to present the outcomes of our calculations related to primordial abundances of light elements, in the context of higher dimensional steady-state universe model in the dilaton gravity. Our results show that abundances of light elements (primordial D, 3He, 4He, T, 7Li) are significantly different for some cases, and a comparison is given between a particular dilaton gravity model and Lambda-CDM in the light of the astrophysical observations.

  14. Energy Distribution in f(R) Gravity

    E-Print Network [OSTI]

    M. Sharif; M. Farasat Shamir

    2009-12-18T23:59:59.000Z

    The well-known energy problem is discussed in f(R) theory of gravity. We use the generalized Landau-Lifshitz energy-momentum complex in the framework of metric f(R) gravity to evaluate the energy density of plane symmetric solutions for some general f(R) models. In particular, this quantity is found for some popular choices of f(R) models. The constant scalar curvature condition and the stability condition for these models are also discussed. Further, we investigate the energy distribution of cosmic string spacetime.

  15. Multidimensional Gravity on the Principal Bundles

    E-Print Network [OSTI]

    V. D. Dzhunushaliev

    1997-11-10T23:59:59.000Z

    The multidimensional gravity on the total space of principal bundle is considered. In this theory the gauge fields arise as nondiagonal components of multidimensional metric. The spherically symmetric and cosmology solutions for gravity on SU(2) principal bundle are obtained. The static spherically symmetric solution is wormhole-like solution located between two null surfaces, in contrast to 4D Einstein-Yang-Mills theory where corresponding solution (black hole) located outside of event horizon. Cosmology solution (at least locally) has the bouncing off effect for spatial dimensions. In spirit of Einstein these solutions are vacuum solutions without matter.

  16. Violation of Energy Bounds in Designer Gravity

    E-Print Network [OSTI]

    Thomas Hertog

    2006-07-31T23:59:59.000Z

    We continue our study of the stability of designer gravity theories, where one considers anti-de Sitter gravity coupled to certain tachyonic scalars with boundary conditions defined by a smooth function W. It has recently been argued there is a lower bound on the conserved energy in terms of the global minimum of W, if the scalar potential arises from a superpotential P and the scalar reaches an extremum of P at infinity. We show, however, there are superpotentials for which these bounds do not hold.

  17. Weak Gravity Conjecture for Noncommutative Field Theory

    E-Print Network [OSTI]

    Qing-Guo Huang; Jian-Huang She

    2006-11-20T23:59:59.000Z

    We investigate the weak gravity bounds on the U(1) gauge theory and scalar field theories in various dimensional noncommutative space. Many results are obtained, such as the upper bound on the noncommutative scale $g_{YM}M_p$ for four dimensional noncommutative U(1) gauge theory. We also discuss the weak gravity bounds on their commutative counterparts. For example, our result on 4 dimensional noncommutative U(1) gauge theory reduces in certain limit to its commutative counterpart suggested by Arkani-Hamed et.al at least at tree-level.

  18. Holographic superconductors from the massive gravity

    E-Print Network [OSTI]

    Hua Bi Zeng; Jian-Pin Wu

    2014-09-24T23:59:59.000Z

    A holographic superconductor is constructed in the background of a massive gravity theory. In the normal state without condensation, the conductivity exhibits a Drude peak that approaches a delta function in the massless gravity limit as studied by David Vegh. In the superconducting state, besides the infinite DC conductivity, the AC conductivity has Drude behavior at low frequency followed by a power law-fall. These results are in agreement with that found earlier by Horowitz and Santos, who studied a holographic superconductor with an implicit periodic potential beyond the probe limit. The results also agree with measurements on some cuprates.

  19. One Loop Beta Functions in Topologically Massive Gravity

    E-Print Network [OSTI]

    R. Percacci; E. Sezgin

    2010-02-15T23:59:59.000Z

    We calculate the running of the three coupling constants in cosmological, topologically massive 3d gravity. We find that \

  20. HoravaLifshitz gravity Victoria University of Wellington

    E-Print Network [OSTI]

    Visser, Matt

    Abstract Horava¬≠Lifshitz gravity Victoria University of Wellington Te Whare W¬Įananga o te ¬ĮUpoko o Vancouver Tuesday 25 August 2009 Matt Visser Who's afraid of Lorentz symmetry breaking? #12;Abstract Horava¬≠Lifshitz gravity Horava¬≠Lifshitz gravity: As of 23 August 2009 Spires reports that this topic has generated: 3

  1. Nordstrom's scalar theory of gravity and the equivalence principle

    E-Print Network [OSTI]

    Nathalie Deruelle

    2011-04-24T23:59:59.000Z

    Nordstrom's theory of gravity, which describes gravity by a scalar field in flat spacetime, is observationally ruled out. It is however the only theory of gravity with General Relativity to obey the strong equivalence principle. I show in this paper that this remarkable property is true beyond post-newtonian level and can be related to the existence of a 'Nordstrom-Katz' superpotential.

  2. Observing ocean heat content using satellite gravity and altimetry

    E-Print Network [OSTI]

    Jayne, Steven

    : ocean heat content, altimetry, satellite gravity, steric height, remote sensing Citation: Jayne, S. RObserving ocean heat content using satellite gravity and altimetry Steven R. Jayne1,2 and John M with satellite measurements of the Earth's time-varying gravity to give improved estimates of the ocean's heat

  3. Conformal gravity from the AdS/CFT mechanism

    SciTech Connect (OSTI)

    Aros, Rodrigo; Romo, Mauricio; Zamorano, Nelson [Departamento de Ciencias Fisicas, Universidad Andres Bello, Av. Republica 252, Santiago (Chile); Departamento de Fisica, Facultad de Ciencias Fisicas y Matematicas, Universidad de Chile, Avda Blanco Encalada 2008, Santiago (Chile)

    2007-03-15T23:59:59.000Z

    We explicitly calculate the induced gravity theory at the boundary of an asymptotically anti-de Sitter five dimensional Einstein gravity. We also display the action that encodes the dynamics of radial diffeomorphisms. It is found that the induced theory is a four dimensional conformal gravity plus a scalar field. This calculation confirms some previous results found by a different approach.

  4. Quantum Gravity in Three Dimensions from Higher-Spin Holography

    E-Print Network [OSTI]

    Tan, Hai Siong

    2013-01-01T23:59:59.000Z

    Higher Spin Anti-de Sitter Gravity,Ē JHEP 1012, 007 (2010)gravity in three dimensions from the per- spective of higher-spin holography in anti-gravity in three dimen- sions in the framework of higher-spin holography in anti-

  5. Note and Record A note on polyvinyl chloride (PVC) pipe traps for

    E-Print Network [OSTI]

    Pretoria, University of

    Note and Record A note on polyvinyl chloride (PVC) pipe traps for sampling vegetation of traditional traps, and many are furtive (Myers et al., 2007; Pittman et al., 2008). PVC pipe traps, which and Hyperolius (see Channing, 2001; du Preez & Carruthers, 2009), may be attracted to artificial refugia of PVC

  6. GENOMIC RESOURCES NOTE Genomic Resources Notes accepted 1 February 201331 March

    E-Print Network [OSTI]

    Rieseberg, Loren

    GENOMIC RESOURCES NOTE Genomic Resources Notes accepted 1 February 2013≠31 March 2013 GENOMIC RESOURCES DEVELOPMENT CONSORTIUM,1 MATTHEW G. KING,2 SEī BASTIEN RENAUT,3 LOREN H. RIESEBERG2,4 and HEATHER C. ROWE3 1 Molecular Ecology Resources Editorial Office, 6270 University Blvd, Vancouver, BC V6T 1Z4

  7. 2004 Notes2Providers.doc -1-Notes to Retail Providers

    E-Print Network [OSTI]

    with the meter data reported to the system operator (Retail providers that purchase electricity from a power pool2004 Notes2Providers.doc -1- Notes to Retail Providers February 2005 Power Source Disclosure than the California Mix, (Net System Power)i . As a retail provider you are probably aware that all

  8. Scientific note A scientific note on the partial nucleotide sequence of a US strain

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Scientific note A scientific note on the partial nucleotide sequence of a US strain of Kashmir bee bee virus / nucleotide sequence / RT-PCR Kashmir bee virus (KBV) was first isolated from a diseased sequence of the amplified product. The BLASTN search of the Nucleotide Sequence Database at the National

  9. The Mars Gravity Biosatellite as an innovative partial gravity research platform

    E-Print Network [OSTI]

    Fulford-Jones, Thaddeus R. F

    2008-01-01T23:59:59.000Z

    The Mars Gravity Biosatellite is an unprecedented independent spaceflight platform for gravitational biology research. With a projected first launch after 2010, the low Earth orbit satellite will support a cohort of fifteen ...

  10. Crustal structure beneath the gravity lineations in the Gravity Lineations, Intraplate Melting, Petrologic and Seismic Expedition

    E-Print Network [OSTI]

    Webb, Spahr C.

    , Petrologic and Seismic Expedition (GLIMPSE) study area from seismic refraction data R. Chadwick Holmes,1, Intraplate Melting, Petrologic and Seismic Expedition (GLIMPSE) experiment investigated the velocity in the Gravity Lineations, Intraplate Melting, Petrologic and Seismic Expedition (GLIMPSE) study area from

  11. Infrared fixed point in quantum Einstein gravity

    E-Print Network [OSTI]

    S. Nagy; J. Krizsan; K. Sailer

    2012-06-28T23:59:59.000Z

    We performed the renormalization group analysis of the quantum Einstein gravity in the deep infrared regime for different types of extensions of the model. It is shown that an attractive infrared point exists in the broken symmetric phase of the model. It is also shown that due to the Gaussian fixed point the IR critical exponent $\

  12. A New Model of Nonlocal Modified Gravity

    E-Print Network [OSTI]

    Ivan Dimitrijevic; Branko Dragovich; Jelena Grujic; Zoran Rakic

    2014-11-18T23:59:59.000Z

    We consider a new modified gravity model with nonlocal term of the form $R^{-1} \\mathcal{F}(\\Box) R. $ This kind of nonlocality is motivated by investigation of applicability of a few unusual ans\\"atze to obtain some exact cosmological solutions. In particular, we find attractive and useful quadratic ansatz $\\Box R = q R^{2}.$

  13. Energy definition for quadratic curvature gravities

    E-Print Network [OSTI]

    Ahmet Baykal

    2012-12-03T23:59:59.000Z

    A conserved current for generic quadratic curvature gravitational models is defined, and it is shown that, at the linearized level, it corresponds to the Deser-Tekin charges. An explicit expression for the charge for new massive gravity in three dimensions is given. Some implications of the linearized equations are discussed.

  14. Ultrasonic hydrometer. [Specific gravity of electrolyte

    DOE Patents [OSTI]

    Swoboda, C.A.

    1982-03-09T23:59:59.000Z

    The disclosed ultrasonic hydrometer determines the specific gravity (density) of the electrolyte of a wet battery, such as a lead-acid battery. The hydrometer utilizes a transducer that when excited emits an ultrasonic impulse that traverses through the electrolyte back and forth between spaced sonic surfaces. The transducer detects the returning impulse, and means measures the time t between the initial and returning impulses. Considering the distance d between the spaced sonic surfaces and the measured time t, the sonic velocity V is calculated with the equation V = 2d/t. The hydrometer also utilizes a thermocouple to measure the electrolyte temperature. A hydrometer database correlates three variable parameters including sonic velocity in and temperature and specific gravity of the electrolyte, for temperature values between 0 and 40/sup 0/C and for specific gravity values between 1.05 and 1.30. Upon knowing two parameters (the calculated sonic velocity and the measured temperature), the third parameter (specific gravity) can be uniquely found in the database. The hydrometer utilizes a microprocessor for data storage and manipulation.

  15. Topological Black Holes in Quantum Gravity

    E-Print Network [OSTI]

    J. Kowalski-Glikman; D. Nowak-Szczepaniak

    2000-07-31T23:59:59.000Z

    We derive the black hole solutions with horizons of non-trivial topology and investigate their properties in the framework of an approach to quantum gravity being an extension of Bohm's formulation of quantum mechanics. The solutions we found tend asymptotically (for large $r$) to topological black holes. We also analyze the thermodynamics of these space-times.

  16. Schwarzschild solution in extended teleparallel gravity

    E-Print Network [OSTI]

    Nashed, G G L

    2015-01-01T23:59:59.000Z

    Tetrad field, with two unknown functions of radial coordinate and an angle $\\Phi$ which is the polar angle $\\phi$ times a function of the redial coordinate, is applied to the field equation of modified theory of gravity. Exact vacuum solution is derived whose scalar torsion, $T ={T^\\alpha}_{\\mu \

  17. Constraining torsion with Gravity Probe B

    SciTech Connect (OSTI)

    Mao Yi; Guth, Alan H.; Cabi, Serkan [Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States); Tegmark, Max [Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States); MIT Kavli Institute for Astrophysics and Space Research, Cambridge, Massachusetts 02139 (United States)

    2007-11-15T23:59:59.000Z

    It is well-entrenched folklore that all torsion gravity theories predict observationally negligible torsion in the solar system, since torsion (if it exists) couples only to the intrinsic spin of elementary particles, not to rotational angular momentum. We argue that this assumption has a logical loophole which can and should be tested experimentally, and consider nonstandard torsion theories in which torsion can be generated by macroscopic rotating objects. In the spirit of action=reaction, if a rotating mass like a planet can generate torsion, then a gyroscope would be expected to feel torsion. An experiment with a gyroscope (without nuclear spin) such as Gravity Probe B (GPB) can test theories where this is the case. Using symmetry arguments, we show that to lowest order, any torsion field around a uniformly rotating spherical mass is determined by seven dimensionless parameters. These parameters effectively generalize the parametrized post-Newtonian formalism and provide a concrete framework for further testing Einstein's general theory of relativity (GR). We construct a parametrized Lagrangian that includes both standard torsion-free GR and Hayashi-Shirafuji maximal torsion gravity as special cases. We demonstrate that classic solar system tests rule out the latter and constrain two observable parameters. We show that Gravity Probe B is an ideal experiment for further constraining nonstandard torsion theories, and work out the most general torsion-induced precession of its gyroscope in terms of our torsion parameters.

  18. Scale invariance, unimodular gravity and dark energy

    E-Print Network [OSTI]

    Mikhail Shaposhnikov; Daniel Zenhausern

    2008-12-16T23:59:59.000Z

    We demonstrate that the combination of the ideas of unimodular gravity, scale invariance, and the existence of an exactly massless dilaton leads to the evolution of the universe supported by present observations: inflation in the past, followed by the radiation and matter dominated stages and accelerated expansion at present. All mass scales in this type of theories come from one and the same source.

  19. Topology in 4D simplicial quantum gravity

    E-Print Network [OSTI]

    S. Bilke; Z. Burda; B. Petersson

    1996-11-22T23:59:59.000Z

    We simulate 4d simplicial gravity for three topologis S4, S3xS1, (S1)^4 and show that the free energy for these three fixed topology ensembles is the same in the thermodynamic limit. We show, that the next-to-leading order corrections, at least away from the critical point, can be described by kinematic sources.

  20. Schwarzschild solution in extended teleparallel gravity

    E-Print Network [OSTI]

    G. G. L. Nashed

    2015-01-05T23:59:59.000Z

    Tetrad field, with two unknown functions of radial coordinate and an angle $\\Phi$ which is the polar angle $\\phi$ times a function of the redial coordinate, is applied to the field equation of modified theory of gravity. Exact vacuum solution is derived whose scalar torsion, $T ={T^\\alpha}_{\\mu \

  1. The diffeomorphism algebra approach to quantum gravity

    E-Print Network [OSTI]

    T. A. Larsson

    1999-09-13T23:59:59.000Z

    The representation theory of non-centrally extended Lie algebras of Noether symmetries, including spacetime diffeomorphisms and reparametrizations of the observer's trajectory, has recently been developped. It naturally solves some long-standing problems in quantum gravity, e.g. the role of diffeomorphisms and the causal structure, but some new questions also arise.

  2. Running Coupling Constants in 2D Gravity

    E-Print Network [OSTI]

    Christof Schmidhuber

    1993-08-26T23:59:59.000Z

    The renormalization group flow in two--dimensional field theories that are coupled to gravity is discussed at the example of the sine-Gordon model. In order to derive the phase diagram in agreement with the matrix model results, it is necessary to generalize the theory of David, Distler and Kawai.

  3. Explicit versus Spontaneous Diffeomorphism Breaking in Gravity

    E-Print Network [OSTI]

    Robert Bluhm

    2015-04-02T23:59:59.000Z

    Gravitational theories with fixed background fields break local Lorentz and diffeomorphism invariance either explicitly or spontaneously. In the case of explicit breaking it is known that conflicts can arise between the dynamics and geometrical constraints, while spontaneous breaking evades this problem. It is for this reason that in the gravity sector of the Standard-Model Extension (SME) it is assumed that the background fields (SME coefficients) originate from spontaneous symmetry breaking. However, in other examples, such as Chern-Simons gravity and massive gravity, diffeomorphism invariance is explicitly broken by the background fields, and the potential conflicts between the dynamics and geometry can be avoided in most cases. An analysis of how this occurs is given, and the conditions that are placed on the metric tensor and gravitational structure as a result of the presence of an explicit-breaking background are described. The gravity sector of the SME is then considered for the case of explicit breaking. However, it is found that a useful post-Newtonian limit is only obtained when the symmetry breaking is spontaneous.

  4. Second order noncommutative corrections to gravity

    SciTech Connect (OSTI)

    Calmet, Xavier [Universite Libre de Bruxelles, Service de Physique Theorique, CP225 Boulevard du Triomphe (Campus plaine), B-1050 Brussels (Belgium); Kobakhidze, Archil [Department of Physics and Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 (United States)

    2006-08-15T23:59:59.000Z

    In this work, we calculate the leading order corrections to general relativity formulated on a canonical noncommutative spacetime. These corrections appear in the second order of the expansion in theta. First order corrections can only appear in the gravity-matter interactions. Some implications are briefly discussed.

  5. Measuring the Earth's gravity field with cold atom interferometers

    E-Print Network [OSTI]

    Carraz, Olivier; Massotti, Luca; Haagmans, Roger; Silvestrin, Pierluigi

    2015-01-01T23:59:59.000Z

    The scope of the paper is to propose different concepts for future space gravity missions using Cold Atom Interferometers (CAI) for measuring the diagonal elements of the gravity gradient tensor, the spacecraft angular velocity and the spacecraft acceleration. The aim is to achieve better performance than previous space gravity missions due to a very low white noise spectral behaviour of the CAI instrument and a very high common mode rejection, with the ultimate goals of determining the fine structures of the gravity field with higher accuracy than GOCE and detecting time-variable signals in the gravity field.

  6. Xyce parallel electronic simulator release notes.

    SciTech Connect (OSTI)

    Keiter, Eric Richard; Hoekstra, Robert John; Mei, Ting; Russo, Thomas V.; Schiek, Richard Louis; Thornquist, Heidi K.; Rankin, Eric Lamont; Coffey, Todd Stirling; Pawlowski, Roger Patrick; Santarelli, Keith R.

    2010-05-01T23:59:59.000Z

    The Xyce Parallel Electronic Simulator has been written to support, in a rigorous manner, the simulation needs of the Sandia National Laboratories electrical designers. Specific requirements include, among others, the ability to solve extremely large circuit problems by supporting large-scale parallel computing platforms, improved numerical performance and object-oriented code design and implementation. The Xyce release notes describe: Hardware and software requirements New features and enhancements Any defects fixed since the last release Current known defects and defect workarounds For up-to-date information not available at the time these notes were produced, please visit the Xyce web page at http://www.cs.sandia.gov/xyce.

  7. The equilibrium of dense plasma in a gravity field

    E-Print Network [OSTI]

    B. V. Vasiliev

    2000-10-31T23:59:59.000Z

    The equilibrium of dense plasma in a gravity field and problem of a gravity-induced electric polarization in this matter are discussed. The calculation for metals performed before shows that both - the gravity-induced compressive strain and the gravity-induced electric field - are inversely proportional to their Young moduli. The calculation for high dense plasma, where Young modulus is equal to zero, shows that there is another effect: each cell of this plasma inside a celestial body in own gravity field obtains the small positive electric charge. It happens as heavy ions sag on to light electron clouds. A celestial body stays electrically neutral as a whole, because the negative electric charge concentrates on its surface. The gravity-induced positive volume charge is very small, its order of magnitude equals to $10^{-18}e$ per atom only. But it is sufficient for the complete conterbalancing of the gravity force.

  8. Fencing in the Swampland: Quantum Gravity Constraints on Large Field Inflation

    E-Print Network [OSTI]

    Brown, Jon; Shiu, Gary; Soler, Pablo

    2015-01-01T23:59:59.000Z

    In this note we show that models of natural inflation based on closed string axions are incompatible with the weak gravity conjecture (WGC). Specifically, we use T-duality in order to map the bounds on the charge-to-mass ratio of particles imposed by the WGC, to constraints on the ratio between instanton actions and axion decay constants. We use this connection to prove that if the WGC holds, even when multiple axions are present and mix with each other, one cannot have large axion decay constants while remaining in a regime of perturbative control. We also discuss the extension of the WGC to discrete symmetries and its possible impact on models with axion monodromy, and the distinction between the strong and mild versions of the WGC. Finally, we offer some speculations regarding the import of these results to the general theory of inflation.

  9. COMPUTER SECURITY revision list Subject Notes

    E-Print Network [OSTI]

    Chothia, Tom

    COMPUTER SECURITY revision list Subject Notes AES DES 3-DES CBC Diffie-Hellman Elgaml RSA KeyCrypt Electronic Signatures PGP Access Control Matrix Access Control Lists #12;COMPUTER SECURITY revision list for Linux Confused Deputy Problem MD5 SHA1 SHA2 / SHA256 / SHA512 SHA3 Collision attacks MAC Password

  10. DANE TECHNICAL NOTE INFN -LNF, Accelerator Division

    E-Print Network [OSTI]

    Istituto Nazionale di Fisica Nucleare (INFN)

    of the utilities (electrical power substation and cooling system) in the linac tunnel and klystron gallery before. Hutton (CEBAF), Chairman W. Scandale (CERN) A. WrŁlich (ST) Overall Project Progress and Status The Committee noted the progress made since the last Review and is pleased to see that the major Project

  11. Technical Note Puncture protection of PVC geomembranes______________________________________________

    E-Print Network [OSTI]

    Technical Note Puncture protection of PVC geomembranes a design procedure for estimating the puncture protection of polyvinyl chloride (PVC) geomembranes. The puncture resistance of 0.5 mm, 0.75 mm, and 1.0 mm thick PVC geomembranes was measured using the truncated

  12. Ocean Engineering 33 (2006) 22092223 Technical Note

    E-Print Network [OSTI]

    Mohseni, Kamran

    Ocean Engineering 33 (2006) 2209¬≠2223 Technical Note Pulsatile vortex generators for low-speed maneuvering of small underwater vehicles Kamran Mohseni√? Department of Aerospace Engineering Sciences, science writer). #12;1. Introduction Oceans hold the key to the origin and continuity of life on the Earth

  13. Section Notes 3 The Simplex Algorithm

    E-Print Network [OSTI]

    Chen, Yiling

    Section Notes 3 The Simplex Algorithm Applied Math 121 Week of September 22, 2014 Goals for the week · understand how to get from an LP to a simplex tableau. · be familiar with reduced costs, optimal solutions, different types of variables and their roles. · understand the steps of simplex phases I and II

  14. Section Notes 3 The Simplex Algorithm

    E-Print Network [OSTI]

    Chen, Yiling

    Section Notes 3 The Simplex Algorithm Applied Math 121 Week of February 14, 2011 Goals for the week · understand how to get from an LP to a simplex tableau. · be familiar with reduced costs, optimal solutions, different types of variables and their roles. · understand the steps of simplex phases I and II. · be able

  15. Section Notes 3 The Simplex Algorithm

    E-Print Network [OSTI]

    Chen, Yiling

    Section Notes 3 The Simplex Algorithm Applied Math 121 Week of February 17, 2014 Goals for the week · understand how to get from an LP to a simplex tableau. · be familiar with reduced costs, optimal solutions, different types of variables and their roles. · understand the steps of simplex phases I and II. · be able

  16. Briefing Note 2010 19 15 September 2010

    E-Print Network [OSTI]

    Pedersen, Tom

    incremental costs for energy efficiency (EE) retrofits than do newer buildings. Throughout New York, 43Briefing Note 2010 ≠ 19 15 September 2010 Energy Efficiency Retrofits Case Study - Empire State Building Produced in partnership with ISIS | A Research Centre | Sauder School of Business | UBC Author

  17. Technical Note Graphene: Substrate preparation and introduction

    E-Print Network [OSTI]

    Technical Note Graphene: Substrate preparation and introduction Radosav S. Pantelic a , Ji Won Suk September 2010 Accepted 4 October 2010 Available online xxxx Keywords: Graphene Graphene oxide Cryo the transfer of continuous, single-layer, pristine graphene to standard Quan- tifoil TEM grids. We compare

  18. Engineering Notes Ice Shape Characterization Using

    E-Print Network [OSTI]

    Tino, Peter

    Engineering Notes Ice Shape Characterization Using Self-Organizing Maps Stephen T. McClain Baylor. Introduction DURING the validation and verification of ice accretion codes, predicted ice shapes must be compared with experimental measurements of wind-tunnel or atmospheric ice shapes. Current methods for ice

  19. Briefing Note 2010 25 16 December 2010

    E-Print Network [OSTI]

    Pedersen, Tom

    of the CDM carbon market distortion issue are 19 chemical gas manufacturers, located mainly in China manufacturers in order to determine if the carbon crediting system has been manipulated.xi To date, China has1 Briefing Note 2010 ≠ 25 16 December 2010 Carbon Market Distortions and Diminishing Environmental

  20. Briefing Note 2010 -9 21 June 2010

    E-Print Network [OSTI]

    Pedersen, Tom

    for a carbon tariff in an attempt to curb unfair competition from countries like China, which have weakerBriefing Note 2010 - 9 21 June 2010 Border Carbon Adjustments: The Canadian Context Produced Border carbon adjustments (BCAs), also known as carbon tariffs, are being proposed in the EU and US

  1. AGN Taxonomy and Unification Historical notes

    E-Print Network [OSTI]

    Aretxaga, Itziar

    Lecture 1 AGN Taxonomy and Unification ∑ Historical notes ∑ Multifrequency detection of nuclear activity ∑ Classification of AGN - taxonomy ∑ Unification ∑ Evidence for obscuring tori in AGN Itziar Aretxaga (INAOE) @El Escorial, Dec 2007 #12;AGN taxonomy "Active" is used to refer to energetic processes

  2. CS229 Lecture notes Generative Learning algorithms

    E-Print Network [OSTI]

    Kosecka, Jana

    analysis (GDA). In this model, we'll assume that p(x|y) is distributed according to a multivariate normal discriminant analysis The first generative learning algorithm that we'll look at is Gaussian discrim- inant. In these notes, we'll talk about a different type of learning algorithm. Consider a classification problem

  3. 203-HJT-0611 UNLESS OTHERWISE NOTED

    E-Print Network [OSTI]

    McDonald, Kirk

    WELDS SHALL BE WITH ASME SECTION IX. NO CODE STAMP REQUIRED. 1. WELDING SHALL BE PERFORMED IN ACCORDANCE DIMENSIONS AND TOLERANCES PER ASME Y14.5M 3. MACHINED FINISH 125 MICRO- INCHES RMS 4. CONCENTRICITY .010 TIR.850 2.4 .9 2.850 .900 .975 1.20 NOTES 1. WELDING SHALL BE PERFORMED IN ACCORDANCE WITH ASME SECTION IX

  4. UNLESS OTHERWISE NOTED 203-HJT-0611

    E-Print Network [OSTI]

    McDonald, Kirk

    WITH ASME SECTION IX. NO CODE STAMP REQUIRED. 2. NO RADIOGRAPHY REQUIRED. ALL WELDS SHALL BE DYE PENETRANT.349 NOTES 1. WELDING SHALL BE PERFORMED IN ACCORDANCE WITH ASME SECTION IX. NO CODE STAMP REQUIRED. 2 AND TOLERANCES PER ASME Y14.5M 3. MACHINED FINISH 125 MICRO- INCHES RMS 4. CONCENTRICITY .010 TIR 5. MACHINED

  5. UNLESS OTHERWISE NOTED 203-HJT-0620A

    E-Print Network [OSTI]

    McDonald, Kirk

    .928 2.298 NOTES 1. WELDING AND INSPECTION SHALL BE PERFORMED IN ACCORDANCE WITH ASME SECTION IX. NO CODE ASME Y14.5M 3. MACHINED FINISH 125 MICRO- INCHES RMS 4. CONCENTRICITY .010 TIR 5. MACHINED ANGLES 1 INSPECTION REQUIRED. 2. NUMBER OF PIPE BUTT WELDS SHOULD BE MINIMIZED. NO CODE STAMP REQUIRED. IN ACCORDANCE

  6. DANE TECHNICAL NOTE INFN -LNF, Accelerator Division

    E-Print Network [OSTI]

    Istituto Nazionale di Fisica Nucleare (INFN)

    THE RADIOFREQUENCY SYSTEM FOR DANE: FIRST REMARKS R. Boni, A. Gallo INTRODUCTION This note presents some considerations on the Radiofrequency System (RFS) for DANE. It is worthed to mention that the RFS has to supply to the beams the energy lost by synchrotron radiation and parasitic losses. We propose two different solutions

  7. Research Note Fast 2-flip move evaluations

    E-Print Network [OSTI]

    Hao, Jin-Kao

    problems Fred Glover1 and Jin-Kao Hao2 1 OptTek Systems, Inc. 1919 Seventh Street Boulder, CO 80302, USA glover@opttek.com 2 Laboratoire d'Etude et de Recherche en Informatique (LERIA) Université d'Angers 2. Corresponding author: Fred Glover Biographical notes: Fred Glover holds the title of Distinguished Professor

  8. CenterPulse ContentsDirector's Notes

    E-Print Network [OSTI]

    Wisconsin at Madison, University of

    to our year-in-review newsletter, CenterPulse. Please forward it to your colleagues to help us improveCenterPulse ContentsDirector's Notes 2012 Year in Review Happy New Year, everyone! The year 2012 that recommended full continuation of funding for years 52-56 of NIH support. While the final funding level

  9. GEOLOGICAL NOTE Desert Pavement: An Environmental Canary?

    E-Print Network [OSTI]

    Ahmad, Sajjad

    GEOLOGICAL NOTE Desert Pavement: An Environmental Canary? P K. Haft Division of Earth and Ocean 27708 Ie-mail: /wff@geo.duke_eciul ABSTRACT Ongoing ctisruption of ancient, varnished desert pavement that the pavement disturbances reported here ~ue rarc on the millcnnhll time scale of desert varnish format ion

  10. Agent Notes Day 4 ~ Health Training

    E-Print Network [OSTI]

    ≠ Agent Notes Day 4 ~ Health Training In preparation for the Health Day, you could order the National Institute on Aging, National Institutes of Health. To order these free booklets, go to www in the afternoon, and edit your agenda to reflect your choices. Several HealthHints newsletters are referenced

  11. Briefing Note 2011 29 4 February 2011

    E-Print Network [OSTI]

    Pedersen, Tom

    Briefing Note 2011 ≠ 29 4 February 2011 Fracking in BC: Integrating climate change issues Produced - otherwise known as fracking. However the current controversy regarding fracking, including in the US options to reduce associated emissions, water, and health impacts. Fracking involves shooting a high

  12. Informal Assessment Work Group Meeting Notes

    E-Print Network [OSTI]

    O'Laughlin, Jay

    Informal Assessment Work Group Meeting Notes November 15, 2006 Present: Rula Awwad-Rafferty, Doug Baker, Dick Battaglia, Ben Beard, Suzi Billington, Alton Campbell, Jeanne Christiansen, Gail Eckwright is completed for all programs by May 2007? (Can we do the level of work needed in this time period?) Doug

  13. Application Note (A9) Revision: A

    E-Print Network [OSTI]

    Johnsen, SŲnke

    measurements of light falling onto a flat surface. Such studies vary from solar UV exposure limitsApplication Note (A9) Revision: A AUGUST 1995 OPTRONIC LABORATORIES, INC. 4632 36TH STREET Orlando on the wavelength of light so the bluer wavelengths are scattered more strongly than redder. This leads

  14. NOTE: The IRB does not stamp the

    E-Print Network [OSTI]

    Loudon, Catherine

    obtaining Short Form consent: Download and review the current IRB approval letter from the Doc DepotNOTE: The IRB does not stamp the HIPAA Research Authorization Form, the Bill of Rights or the Short Short Form Consent ≠ The Basics Date of Last Revision: 08-27-2013 Audience: Researchers Utilizing

  15. Data Mining and Knowledge Discovery: Practice Notes

    E-Print Network [OSTI]

    Novak, Petra Kralj

    1 Data Mining and Knowledge Discovery: Practice Notes dr. Petra Kralj Novak Petra.Kralj.Novak@ijs.si and exam ∑ 2013/12/16: Written exam, seminar proposal discussion ∑ 2014/1/8: Data mining seminar gain becomes the root 7. Divide the set S into subsets Si according to the values of A 8. Repeat steps

  16. Computer Note A Prototype Object Database for

    E-Print Network [OSTI]

    Neigel, Joseph E.

    Computer Note A Prototype Object Database for Mitochondrial DNA Variation J. E. NEIGEL AND P preserved. We hope to prevent further loss by establishing a community database for population genetic surveys. We explored the feasibility of a population genetics database by developing a prototype

  17. Linear Algebra Notes David A. SANTOS

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    Linear Algebra Notes David A. SANTOS dsantos@ccp.edu January 2, 2010 REVISION #12;ii Contents . . . . . . . . . . . . . . . . . . 15 2 Matrices and Matrix Operations 18 2.1 The Algebra of Matrices . . . . . . . . . . . 18 2.3 Diagonalisability . . . . . . . . . . . . . . 143 7.4 Theorem of Cayley and Hamilton . . . . . 147 8 Linear Algebra

  18. Panel Session Notes Session II: Energy

    E-Print Network [OSTI]

    Jawitz, James W.

    to make cars more efficient, to make solar panels store more energy to be dispersed throughout the nightPanel Session Notes Session II: Energy Moderator: Dr. Jennifer Curtis Panelists: Dr. Gary Peter price for operating cost and the cost of manufacturing go down, there are many more sectors in the US

  19. A. La Rosa Lecture Notes APPLIED OPTICS

    E-Print Network [OSTI]

    variation of the electric field of the incident radiation Since the corresponding Poynting vector is given ox , which will depend on the electric field amplitude of the incident radiation. So, we need to find electrical charge emits radiation; the latter is camouflaged in the parameter . Note 2: Equation (11

  20. Practice Note Planning for brownfield land

    E-Print Network [OSTI]

    Practice Note Planning for brownfield land regeneration to woodland and wider green infrastructure 1FCPN022 Gail Atkinson and Kieron Doick March 2014 The regeneration of brownfield land to green of brownfield regeneration to woodland in order to inform project planning, raise awareness of lessons learnt

  1. NASA TECHNICAL NOTE APOLLO EXPERIENCE REPORT -

    E-Print Network [OSTI]

    Rathbun, Julie A.

    .' 1 * . NASA TECHNICAL NOTE APOLLO EXPERIENCE REPORT - SPACECRAFT STRUCTURAL WINDOWS by Oruis E(s)) ' Apollo Spacecraft * Chemically Tempered ' Fracture Mechanics 'h e a l e d Glass * Coatings ' Thermally is presented for the Apollo command and lunar modules. This report presents window design philosophy, design

  2. Fishery Notes EI Nino and Its Impact

    E-Print Network [OSTI]

    Fishery Notes EI Nino and Its Impact on Ecuadorean Fisheries Ecuadorean scientists report that an unusually powerful EI Nino in the eastern Pacific is adversely affecting Ecuador's pelagic fisheries. EI. The impact can be partic- ularly severe on larval and juvenile fish and, as a result, the effects of EI Nino

  3. Poor Theory Notes Toward a Manifesto

    E-Print Network [OSTI]

    Loudon, Catherine

    Poor Theory Notes Toward a Manifesto Poor theory is less a theory than a way of proceeding. Poor theory proposes to find ways of making the most of limited resources. Poor theory uses the tools at hand. Poor theory suggests the need to `work around' intransigent problems, when clear solutions

  4. DANE TECHNICAL NOTE INFN -LNF, Accelerator Division

    E-Print Network [OSTI]

    Istituto Nazionale di Fisica Nucleare (INFN)

    K K DANE TECHNICAL NOTE INFN - LNF, Accelerator Division Frascati, 28 November, 2002 IR-12 together with the total losses around the rings. Results seem encouraging, as calculated loss rates at IR2 in details and compared to calculated losses for the KLOE and the DEAR cases. 1 Introduction Background rates

  5. BNL/SNS TECHNICAL NOTE R. Witkover

    E-Print Network [OSTI]

    BNL/SNS TECHNICAL NOTE NO. 126 R. Witkover TechSource, Inc. Santa Fe, NM September 2, 2003 COLLIDER BLM Signal Calibration Constants R. Witkover TechSource, Inc. Santa Fe, NM Background The Beam Loss Monitor (BLM) system is designed to measure beam losses in the SNS using Ion Chambers supplied by BNL

  6. Tyndall Briefing Note No. 26 Tyndall Briefing Note No. 26 June 2008

    E-Print Network [OSTI]

    Watson, Andrew

    FOR A GLOBAL EMISSIONS TRADING SCHEME (GETS) FOR INTERNATIONAL BUNKERS (AVIATION AND SHIPPING) A Briefing Note the proposal for a global emissions trading scheme (GETS) included in the Open Letter to the IPCC from

  7. Propagation of gravitational waves in multimetric gravity

    E-Print Network [OSTI]

    Manuel Hohmann

    2012-04-22T23:59:59.000Z

    We discuss the propagation of gravitational waves in a recently discussed class of theories containing N >= 2 metric tensors and a corresponding number of standard model copies. Using the formalism of gauge-invariant linear perturbation theory we show that all gravitational waves propagate at the speed of light. We then employ the Newman-Penrose formalism to show that two to six polarizations of gravitational waves may exist, depending on the parameters entering the equations of motion. This corresponds to E(2) representations N_2, N_3, III_5 and II_6. We finally apply our general discussion to a recently presented concrete multimetric gravity model and show that it is of class N_2, i.e., it allows only two tensor polarizations, as it is the case for general relativity. Our results provide the theoretical background for tests of multimetric gravity theories using the upcoming gravitational wave experiments.

  8. Hydrogen atom in Palatini theories of gravity

    E-Print Network [OSTI]

    Gonzalo J. Olmo

    2008-06-03T23:59:59.000Z

    We study the effects that the gravitational interaction of $f(R)$ theories of gravity in Palatini formalism has on the stationary states of the Hydrogen atom. We show that the role of gravity in this system is very important for lagrangians $f(R)$ with terms that grow at low curvatures, which have been proposed to explain the accelerated expansion rate of the universe. We find that new gravitationally induced terms in the atomic Hamiltonian generate a strong backreaction that is incompatible with the very existence of bound states. In fact, in the 1/R model, Hydrogen disintegrates in less than two hours. The universe that we observe is, therefore, incompatible with that kind of gravitational interaction. Lagrangians with high curvature corrections do not lead to such instabilities.

  9. Quantum Gravity models - brief conceptual summary

    E-Print Network [OSTI]

    Jerzy Lukierski

    2014-11-27T23:59:59.000Z

    After short historical overview we describe the difficulties with application of standard QFT methods in quantum gravity (QG). The incompatibility of QG with the use of classical continuous space-time required conceptually new approach. We present briefly three proposals: loop quantum gravity (LQG), the field-theoretic framework on noncommutative space-time and QG models formulated on discretized (triangularized) space-time. We evaluate these models as realizing expected important properties of QG: background independence, consistent quantum diffeomorphisms, noncommutative or discrete structure of space-time at very short distances, finite/renormalizable QG corrections. We only briefly outline an important issue of embedding QG into larger geometric and dynamical frameworks (e.g. supergravity, (super)strings, p-branes, M-theory), with the aim to achieve full unification of all fundamental interactions.

  10. Holographic studies of quasi-topological gravity

    E-Print Network [OSTI]

    Robert C. Myers; Miguel F. Paulos; Aninda Sinha

    2010-06-09T23:59:59.000Z

    Quasi-topological gravity is a new gravitational theory including curvature-cubed interactions and for which exact black hole solutions were constructed. In a holographic framework, classical quasi-topological gravity can be thought to be dual to the large $N_c$ limit of some non-supersymmetric but conformal gauge theory. We establish various elements of the AdS/CFT dictionary for this duality. This allows us to infer physical constraints on the couplings in the gravitational theory. Further we use holography to investigate hydrodynamic aspects of the dual gauge theory. In particular, we find that the minimum value of the shear-viscosity-to-entropy-density ratio for this model is $\\eta/s \\simeq 0.4140/(4\\pi)$.

  11. Elliptic Genera and 3d Gravity

    E-Print Network [OSTI]

    Benjamin, Nathan; Kachru, Shamit; Moore, Gregory W; Paquette, Natalie M

    2015-01-01T23:59:59.000Z

    We describe general constraints on the elliptic genus of a 2d supersymmetric conformal field theory which has a gravity dual with large radius in Planck units. We give examples of theories which do and do not satisfy the bounds we derive, by describing the elliptic genera of symmetric product orbifolds of $K3$, product manifolds, certain simple families of Calabi-Yau hypersurfaces, and symmetric products of the "Monster CFT." We discuss the distinction between theories with supergravity duals and those whose duals have strings at the scale set by the AdS curvature. Under natural assumptions we attempt to quantify the fraction of (2,2) supersymmetric conformal theories which admit a weakly curved gravity description, at large central charge.

  12. Chaotic inflation in higher derivative gravity theories

    E-Print Network [OSTI]

    Myrzakul, Shynaray; Sebastiani, Lorenzo

    2015-01-01T23:59:59.000Z

    In this paper, we investigate chaotic inflation from scalar field subjected to potential in the framework of $f(R^2, P, Q)$-gravity, where we add a correction to Einstein's gravity based on a function of the square of the Ricci scalar $R^2$, the contraction of the Ricci tensor $P$, and the contraction of the Riemann tensor $Q$. The Gauss-Bonnet case is also discussed. We give the general formalism of inflation, deriving the slow-roll parameters, the $e$-folds number, and the spectral indexes. Several explicit examples are furnished, namely we will consider the cases of massive scalar field and scalar field with quartic potential and some power-law function of the curvature invariants under investigation in the gravitational action of the theory. Viable inflation according with observations is analyzed.

  13. Infrared modification of gravity from conformal symmetry

    E-Print Network [OSTI]

    Gegenberg, Jack; Seahra, Sanjeev S

    2015-01-01T23:59:59.000Z

    We reconsider a gauge theory of gravity in which the gauge group is the conformal group SO(4,2) and the action is of the Yang-Mills form, quadratic in the curvature. The resulting gravitational theory exhibits local conformal symmetry and reduces to Weyl-squared gravity under certain conditions. When the theory is linearized about flat spacetime, we find that matter which couples to the generators of special conformal transformations reproduces Newton's inverse square law. Conversely, matter which couples to generators of translations induces a constant and possibly repulsive force far from the source, which may be relevant for explaining the late time acceleration of the universe. The coupling constant of theory is dimensionless, which means that it is potentially renormalizable.

  14. An Algorithm for Detecting Quantum-Gravity Photon Dispersion in Gamma-Ray Bursts: DISCAN

    E-Print Network [OSTI]

    Jeffrey D. Scargle; Jay P. Norris; Jerry T. Bonnell

    2007-09-01T23:59:59.000Z

    DisCan is a new algorithm implementing photon dispersion cancellation in order to measure energy-dependent delays in variable sources. This method finds the amount of reversed dispersion that optimally cancels any actual dispersion present. It applies to any time- and energy-tagged photon data, and can avoid binning in both time and energy. The primary motivation here is the search for quantum gravity based dispersion in future gamma ray burst data from the Gamma Ray Large Area Space Telescope (GLAST). Extrapolation of what is know about bursts at lower energies yields a reasonable prospect that photon dispersion effects consistent with some quantum gravity formalisms may be detected in sufficiently bright bursts. Short bursts have no or very small inherent lags, and are therefore better prospects than long ones, but even they suffer systematic error due to pulse asymmetry that may yield an irreducible uncertainty. We note that data at energies higher than about 0.1 TeV may not be useful for detecting dispersion in GRBs. Of several variants of the proposed algorithm, one based on Shannon information is consistently somewhat superior to all of the others we investigated.

  15. Equivalence principle in scalar-tensor gravity

    E-Print Network [OSTI]

    Dirk Puetzfeld; Yuri N. Obukhov

    2015-05-06T23:59:59.000Z

    We present a direct confirmation of the validity of the equivalence principle for unstructured test bodies in scalar tensor gravity. Our analysis is complementary to previous approaches and valid for a large class of scalar-tensor theories of gravitation. A covariant approach is used to derive the equations of motion in a systematic way and allows for the experimental test of scalar-tensor theories by means of extended test bodies.

  16. Charged Cylindrical Black Holes in Conformal Gravity

    E-Print Network [OSTI]

    Jackson Levi Said; Joseph Sultana; Kristian Zarb Adami

    2013-01-04T23:59:59.000Z

    Considering cylindrical topology we present the static solution for a charged black hole in conformal gravity. We show that unlike the general relativistic case there are two different solutions, both including a factor that when set to zero recovers the familiar static charged black string solution in Einstein's theory. This factor gives rise to a linear term in the potential that also features in the neutral case and may have significant ramifications for particle trajectories.

  17. QPOs: Einstein's gravity non-linear resonances

    E-Print Network [OSTI]

    Paola Rebusco; Marek A. Abramowicz

    2006-01-30T23:59:59.000Z

    There is strong evidence that the observed kHz Quasi Periodic Oscillations (QPOs) in the X-ray flux of neutron star and black hole sources in LMXRBs are linked to Einstein's General Relativity. Abramowicz&Klu\\'zniak (2001) suggested a non-linear resonance model to explain the QPOs origin: here we summarize their idea and the development of a mathematical toy-model which begins to throw light on the nature of Einstein's gravity non-linear oscillations.

  18. Twisted covariant noncommutative self-dual gravity

    SciTech Connect (OSTI)

    Estrada-Jimenez, S.; Garcia-Compean, H.; Obregon, O.; Ramirez, C. [Centro de Estudios en Fisica y Matematicas Basicas y Aplicadas, Universidad Autonoma de Chiapas, Calle 4 Oriente Norte 1428, Tuxtla Gutierrez, Chiapas (Mexico); Departamento de Fisica, Centro de Investigacion y de Estudios Avanzados del IPN, P.O. Box 14-740, 07000 Mexico D.F. (Mexico); Centro de Investigacion y de Estudios Avanzados del IPN, Unidad Monterrey, PIIT, Via del Conocimiento 201, Autopista nueva al Aeropuerto km 9.5, 66600, Apodaca Nuevo Leon (Mexico); Instituto de Fisica de la Universidad de Guanajuato, P.O. Box E-143, 37150, Leon Gto. (Mexico); Facultad de Ciencias Fisico Matematicas, Universidad Autonoma de Puebla, P.O. Box 1364, 72000, Puebla (Mexico)

    2008-12-15T23:59:59.000Z

    A twisted covariant formulation of noncommutative self-dual gravity is presented. The formulation for constructing twisted noncommutative Yang-Mills theories is used. It is shown that the noncommutative torsion is solved at any order of the {theta} expansion in terms of the tetrad and some extra fields of the theory. In the process the first order expansion in {theta} for the Plebanski action is explicitly obtained.

  19. Gravity and Yang-Mills amplitude relations

    SciTech Connect (OSTI)

    Bjerrum-Bohr, N. E. J.; Damgaard, Poul H.; Soendergaard, Thomas [Niels Bohr International Academy and Discovery Center, Niels Bohr Institute, Blegdamsvej 17, DK-2100, Copenhagen O (Denmark); FengBo [Center of Mathematical Science, Zhejiang University, Hangzhou (China)

    2010-11-15T23:59:59.000Z

    Using only general features of the S matrix and quantum field theory, we prove by induction the Kawai-Lewellen-Tye relations that link products of gauge theory amplitudes to gravity amplitudes at tree level. As a bonus of our analysis, we provide a novel and more symmetric form of these relations. We also establish an infinite tower of new identities between amplitudes in gauge theories.

  20. Gravity controlled anti-reverse rotation device

    DOE Patents [OSTI]

    Dickinson, Robert J. (Shaler Township, Allegheny County, PA); Wetherill, Todd M. (Lower Burrell, PA)

    1983-01-01T23:59:59.000Z

    A gravity assisted anti-reverse rotation device for preventing reverse rotation of pumps and the like. A horizontally mounted pawl is disposed to mesh with a fixed ratchet preventing reverse rotation when the pawl is advanced into intercourse with the ratchet by a vertically mounted lever having a lumped mass. Gravitation action on the lumped mass urges the pawl into mesh with the ratchet, while centrifugal force on the lumped mass during forward, allowed rotation retracts the pawl away from the ratchet.

  1. Holographic Superconductors in Horava-Lifshitz Gravity

    E-Print Network [OSTI]

    Kai Lin; Elcio Abdalla; Anzhong Wang

    2014-06-18T23:59:59.000Z

    We consider holographic superconductors related to the Schwarzschild black hole in the low energy limit of Ho\\v{r}ava-Lifshitz spacetime. The non-relativistic electromagnetic and scalar fields are introduced to construct a holographic superconductor model in Ho\\v{r}ava-Lifshitz gravity and the results show that the $\\alpha_2$ term plays an important role, modifying the conductivity curve line by means of an attenuation the conductivity.

  2. Exact Gravity Dual of a Gapless Superconductor

    E-Print Network [OSTI]

    George Koutsoumbas; Eleftherios Papantonopoulos; George Siopsis

    2009-06-17T23:59:59.000Z

    A model of an exact gravity dual of a gapless superconductor is presented in which the condensate is provided by a charged scalar field coupled to a bulk black hole of hyperbolic horizon in asymptotically AdS spacetime. Below a critical temperature, the black hole acquires its hair through a phase transition while an electromagnetic perturbation of the background Maxwell field determines the conductivity of the boundary theory.

  3. Holographic Superconductivity with Gauss-Bonnet gravity

    E-Print Network [OSTI]

    Ruth Gregory

    2010-12-07T23:59:59.000Z

    I review recent work on holographic superconductivity with Einstein-Gauss-Bonnet gravity, and show how the critical temperature of the superconductor depends on both gravitational backreaction and the Gauss-Bonnet parameter, using both analytic and numerical arguments. I also review computations of the conductivity, finding the energy gap, and demonstrating that there is no universal gap ratio, $\\omega_g/T_c$, for these superconductors.

  4. Independent Study in Idaho ISI Course BSU Course NOTES

    E-Print Network [OSTI]

    Barrash, Warren

    Independent Study in Idaho ISI Course BSU Course NOTES Updated 03/2012 Boise State University Administration #12;Independent Study in Idaho ISI Course BSU Course NOTES Updated 03/2012 Boise State University

  5. Abelian-Higgs strings in Rastall gravity

    E-Print Network [OSTI]

    Eugenio R. Bezerra de Mello; Julio C. Fabris; Betti Hartmann

    2015-04-02T23:59:59.000Z

    In this paper we analyze Abelian-Higgs strings in a phenomenological model that takes quantum effects in curved space-time into account. This model, first introduced by Rastall, cannot be derived from an action principle. We formulate phenomenological equations of motion under the guiding principle of minimal possible deformation of the standard equations. We construct string solutions that asymptote to a flat space-time with a deficit angle by solving the set of coupled non-linear ordinary differential equations numerically. Decreasing the Rastall parameter from its Einstein gravity value we find that the deficit angle of the space-time increases and becomes equal to $2\\pi$ at some critical value of this parameter that depends on the remaining couplings in the model. For smaller values the resulting solutions are supermassive string solutions possessing a singularity at a finite distance from the string core. Assuming the Higgs boson mass to be on the order of the gauge boson mass we find that also in Rastall gravity this happens only when the symmetry breaking scale is on the order of the Planck mass. We also observe that for specific values of the parameters in the model the energy per unit length becomes proportional to the winding number, i.e. the degree of the map $S^1 \\rightarrow S^1$. Unlike in the BPS limit in Einstein gravity, this is, however, not connect to an underlying mathematical structure, but rather constitutes a would-be-BPS bound.

  6. Constraining Torsion with Gravity Probe B

    E-Print Network [OSTI]

    Yi Mao; Max Tegmark; Alan Guth; Serkan Cabi

    2007-10-05T23:59:59.000Z

    It is well-entrenched folklore that torsion gravity theories predict observationally negligible torsion in the solar system, since torsion (if it exists) couples only to the intrinsic spin of elementary particles, not to rotational angular momentum. We argue that this assumption has a logical loophole which can and should be tested experimentally. In the spirit of action=reaction, if a rotating mass like a planet can generate torsion, then a gyroscope should also feel torsion. Using symmetry arguments, we show that to lowest order, the torsion field around a uniformly rotating spherical mass is determined by seven dimensionless parameters. These parameters effectively generalize the PPN formalism and provide a concrete framework for further testing GR. We construct a parametrized Lagrangian that includes both standard torsion-free GR and Hayashi- Shirafuji maximal torsion gravity as special cases. We demonstrate that classic solar system tests rule out the latter and constrain two observable parameters. We show that Gravity Probe B (GPB) is an ideal experiment for further constraining torsion theories, and work out the most general torsion-induced precession of its gyroscope in terms of our torsion parameters

  7. COMPLETE CULTIVATION BPG NOTE 13 Best Practice Guidance

    E-Print Network [OSTI]

    tipping method, which is detailed in BPG Note 4: Loose tipping. However, there is a legacy of brownfield

  8. EndNote X6 Basics For Windows

    E-Print Network [OSTI]

    will need to choose between two installation types ≠ Typical or Custom. If you choose Typical, you EndNote: Opening or creating an EndNote Library Adding bibliographic references or citations to your library Using EndNote with Microsoft Word to organize research papers, insert references using Cite While

  9. Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~

    E-Print Network [OSTI]

    Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology,Tsitika Watershed.Research Section,CoastForest Region,BCMOF, Nanaimo, BC. Extension Note EN-021. EN-021 Hydrology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife Extension Note EN-021 March 2006 Forest Research

  10. Nolij Corporation Proprietary & Confidential Information Release Notes for Nolij Web

    E-Print Network [OSTI]

    Escher, Christine

    Nolij Corporation Proprietary & Confidential Information Release Notes for Nolij Web Release 6.3.x Web Release 6.3.x Copyright © 2010 - 2011, Nolij Corporation. All rights reserved. Revised 02Release Notes for Nolij Web Release 6.3.x Introduction These release notes provide information about new

  11. Cooling, Gravity and Geometry: Flow-driven Massive Core Formation

    E-Print Network [OSTI]

    Fabian Heitsch; Lee Hartmann; Adrianne D. Slyz; Julien E. G. Devriendt; Andreas Burkert

    2007-09-15T23:59:59.000Z

    We study numerically the formation of molecular clouds in large-scale colliding flows including self-gravity. The models emphasize the competition between the effects of gravity on global and local scales in an isolated cloud. Global gravity builds up large-scale filaments, while local gravity -- triggered by a combination of strong thermal and dynamical instabilities -- causes cores to form. The dynamical instabilities give rise to a local focusing of the colliding flows, facilitating the rapid formation of massive protostellar cores of a few 100 M$_\\odot$. The forming clouds do not reach an equilibrium state, though the motions within the clouds appear comparable to ``virial''. The self-similar core mass distributions derived from models with and without self-gravity indicate that the core mass distribution is set very early on during the cloud formation process, predominantly by a combination of thermal and dynamical instabilities rather than by self-gravity.

  12. New Agegraphic Dark Energy in $f(R)$ Gravity

    E-Print Network [OSTI]

    M. R. Setare

    2009-08-03T23:59:59.000Z

    In this paper we study cosmological application of new agegraphic dark energy density in the $f(R)$ gravity framework. We employ the new agegraphic model of dark energy to obtain the equation of state for the new agegraphic energy density in spatially flat universe. Our calculation show, taking $nnew agegraphic dark energy model in flat universe in the modified gravity cosmology framework. Also we develop a reconstruction scheme for the modified gravity with $f(R)$ action.

  13. Solar System experiments do not yet veto modified gravity models

    E-Print Network [OSTI]

    Valerio Faraoni

    2006-07-05T23:59:59.000Z

    The dynamical equivalence between modified and scalar-tensor gravity theories is revisited and it is concluded that it breaks down in the limit to general relativity. A gauge-independent analysis of cosmological perturbations in both classes of theories lends independent support to this conclusion. As a consequence, the PPN formalism of scalar-tensor gravity and Solar System experiments do not veto modified gravity, as previously thought.

  14. AdS waves as exact solutions to quadratic gravity

    SciTech Connect (OSTI)

    Guellue, Ibrahim; Sisman, Tahsin Cagri; Tekin, Bayram [Department of Physics, Middle East Technical University, 06531 Ankara (Turkey); Guerses, Metin [Department of Mathematics, Faculty of Sciences Bilkent University, 06800 Ankara (Turkey)

    2011-04-15T23:59:59.000Z

    We give an exact solution of the quadratic gravity in D dimensions. The solution is a plane-fronted wave metric with a cosmological constant. This metric solves not only the full quadratic gravity field equations but also the linearized ones which include the linearized equations of the recently found critical gravity. A subset of the solutions change the asymptotic structure of the anti-de Sitter space due to their logarithmic behavior.

  15. Analysis of faults using gravity methods in Mason County, Texas

    E-Print Network [OSTI]

    Milligan, Michael Glen

    1992-01-01T23:59:59.000Z

    Committee: Dr. D. A. Fahlquist Dr. B. Johnson The objective of this study is to determine the applicability of gravity profiling methods for determining the location and throw of a series of faults related to a structural graben in northern Mason County... profiles. For two faults with the best geologic control, the best-fit gravity models compared favorably with the the geologic model constructed by Randolph (1991) on the basis of surface mapping, structural control and well control. The gravity models...

  16. Gravity interpretation of the northern Overthrust Belt, Idaho and Wyoming

    E-Print Network [OSTI]

    Silver, Wendy Ilene

    1979-01-01T23:59:59.000Z

    provide a potential source of information about the configuration of the sedimentary rock / Precambrian basement interface as well as the geometry of the overlying younger rocks. GRAVITY DA. A Regional Gravity The regional gravity field of Wyoming..., Jurassic and Lower Cretaceous units. It may therefore be concluded that the uplifts of the Precambrian basement were fomed after the deposition of those overly1ng sedimentary rocks. ACKNOWLEDGEMEWTS I w1sh to thank Dr, R. R. Berg, chairman of my...

  17. LLW notes. Vol. 11, No. 1

    SciTech Connect (OSTI)

    NONE

    1996-02-01T23:59:59.000Z

    `LLW Notes` is distributed by Afton Associates, Inc. to Low-Level Radioactive Waste Forum Participants and other state and compact officials identified by those Participants to receive `LLW Notes`. The Low-Level Radioactive Waste Forum (LLW Forum) is an association of state and compact representatives, appointed by governors and compact commissions, established to facilitate state and compact implementation of the Low-Level Radioactive Waste Policy Act of 1980 and the Low-Level Radioactive Waste Policy Amendments Act of 1985 and to promote the objectives of low-level radioactive waste regional compacts. The LLW Forum provides an opportunity for state and compact officials to share information with one another and to exchange views with officials of federal agencies and other interested parties.

  18. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Energy I I' a(STEO)U.S. CoalInputs &Futures PricesAPIAPI Gravity

  19. Notes 16. Analysis of tilting pad bearings

    E-Print Network [OSTI]

    San Andres, Luis

    2010-01-01T23:59:59.000Z

    NOTES 16. STATIC AND DYNAMIC FORCED PERFORMANCE OF TILTING PAD BEARINGS: ANALYSIS INCLUDING PIVOT STIFFNESS Dr. Luis San Andr?s Mast-Childs Professor August 2010 SUMMARY Work in progress ? still a lot of be done Introduction... Figure 1 shows a tilting pad journal bearing comprised of four pads. Each pad tilts about its pivot making a hydrodynamic film that generates a pressure reacting to the static load applied on the spinning journal. This type of bearing is typically...

  20. Advanced Analysis: Skeleton notes 1. Fourier Theory

    E-Print Network [OSTI]

    Davies, Christopher

    Advanced Analysis: Skeleton notes 1. Fourier Theory The Fourier series of a function f() on [-, ] is - anein , where an = an(f) = 1 2 - f()e-in d. The Fourier transform of a function f(x) on R is the function ^f() = 1 2 - f(x)e-ix dx, and the Fourier inversion formula is f(x) = - f()eix d. One circle

  1. asymptotically safe gravity: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    at high energies. Elisa Manrique; Stefan Rechenberger; Frank Saueressig 2011-02-24 2 Fractal Spacetime Structure in Asymptotically Safe Gravity General Relativity & Quantum...

  2. Quantized gauge-affine gravity in the superfiber bundle approach

    E-Print Network [OSTI]

    A. Meziane; M. Tahiri

    2005-11-10T23:59:59.000Z

    The quantization of gauge-affine gravity within the superfiber bundle formalism is proposed. By introducing an even pseudotensorial 1-superform over a principal superfibre bundle with superconnection, we obtain the geometrical Becchi-Rouet-Stora-Tyutin (BRST) and anti-BRST transformations of the fields occurring in such a theory. Reducing the four-dimensional general affine group double-covering to the Poincare group double-covering we also find the BRST and anti-BRST transformations of the fields present in Einstein's gravity. Furthermore, we give a prescription leading to the construction of both BRST-invariant gauge-fixing action for gauge-affine gravity and Einstein's gravity.

  3. atmospheric gravity waves: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    gravity waves (AGWs). Satellite imagery shows evidence the characteristics of these waves. The favorable wave propagation conditions in 12;this region are illustrated 5...

  4. Integration of Full Tensor Gravity and ZTEM Passive Low Frequency...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    and ZTEM Passive Low Frequency EM Instruments for Simultaneous Data Acquisition Integration of Full Tensor Gravity and ZTEM Passive Low Frequency EM Instruments for...

  5. Ground Gravity Survey At Blue Mountain Geothermal Area (Fairbank...

    Open Energy Info (EERE)

    Fairbank Engineering Ltd, 2003) Exploration Activity Details Location Blue Mountain Geothermal Area Exploration Technique Ground Gravity Survey Activity Date Usefulness not...

  6. Exercise protocols during short-radius centrifugation for artificial gravity

    E-Print Network [OSTI]

    Edmonds, Jessica Leigh

    2008-01-01T23:59:59.000Z

    Long-duration spaceflight results in severe physiological deconditioning, threatening the success of interplanetary travel. Exercise combined with artificial gravity provided by centrifugation may be the comprehensive ...

  7. The f(R) Gravity Function of the Linde Quintessence

    E-Print Network [OSTI]

    Sergei V. Ketov; Natsuki Watanabe

    2014-10-20T23:59:59.000Z

    We calculate the f(R) gravity function in the dual gravity description of the quintessence model with a quadratic (Linde) scalar potential and a positive cosmological constant. We find that in the large curvature regime relevant to chaotic inflation in early Universe, the dual f(R) gravity is well approximated by the (matter) loop-corrected Starobinsky inflationary model. In the small curvature regime relevant to dark energy in the present Universe, the f(R) gravity function reduces to the Einstein-Hilbert one with a positive cosmological constant.

  8. Ground Gravity Survey At Lake City Hot Springs Area (Warpinski...

    Open Energy Info (EERE)

    fault zones. The focus of Lake City Geothermal's current effort is on enhancing the site interpretation by re-evaluating the existing seismic data, conducting a detailed gravity...

  9. Lessons in quantum gravity from quantum field theory

    SciTech Connect (OSTI)

    Berenstein, David [Department of Physics, University of California at Santa Barbara, CA 93106 (United States); Institute for Advanced Study, School of Natural Science, Princeton, NJ 08540 (United States)

    2010-12-07T23:59:59.000Z

    This paper reviews advances in the understanding of quantum gravity based on field theory calculations in the AdS/CFT correspondence.

  10. Summary of Session A6: Alternative Theories of Gravity

    E-Print Network [OSTI]

    R. B. Mann

    1998-03-13T23:59:59.000Z

    This is a summary of the workshop A.6 on Alternative Theories of Gravity, prepared for the proceedings for the GR15 conference.

  11. Ground Gravity Survey At Long Valley Caldera Geothermal Area...

    Open Energy Info (EERE)

    Battaglia, Et Al., 2003) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At Long Valley Caldera Geothermal Area (Battaglia,...

  12. Strong and weak gravitational field in $R+?^4/R$ gravity

    E-Print Network [OSTI]

    Kh. Saaidi; A. Vajdi; S. W. Rabiei; A. Aghamohammadi; H. Sheikhahmadi

    2012-01-18T23:59:59.000Z

    We introduce a new approach for investigating the weak field limit of vacuum field equations in $f(R)$ gravity and we find the weak field limit of $f(R)=R+\\mu ^4/R$ gravity. Furthermore, we study the strong gravity regime in $R+\\mu^{4}/R$ model of $f(R)$ gravity. We show the existence of strong gravitational field in vacuum for such model. We find out in the limit $\\mu\\rightarrow 0$, the weak field limit and the strong gravitational field can be regarded as a perturbed Schwarzschild metric.

  13. MediaWiki API

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer Plant JumpMarysville, Ohio: Energy8429¬į, -88.864698¬įMecosta County,New York: Energyxml

  14. MediaWiki API

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHighand Retrievals from a NewCuneoTechnologyCHPRC NewsMarch AprilHouse

  15. Web Service Interface (API)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron SpinPrincetonUsing Maps1DOETHE FUTUREBrowser Interface

  16. Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife

    E-Print Network [OSTI]

    Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife Extension Note EN-007

  17. Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife

    E-Print Network [OSTI]

    Extension Note Research Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology Disciplines: Ecology ~ Geology ~ Geomorphology ~ Hydrology ~ Pedology ~ Silviculture ~ Wildlife Extension Note

  18. Gravitational Collapse In Husain Space-time For Brans-Dicke Gravity Theory with Power-law Potential

    E-Print Network [OSTI]

    Prabir Rudra; Ritabrata Biswas; Ujjal Debnath

    2014-08-18T23:59:59.000Z

    The motive of this work is to study gravitational collapse in Husain space-time in Brans-Dicke gravity theory. Among many scalar-tensor theories of gravity, Brans-Dicke is the simplest and the impact of it can be regulated by two parameters associated with it, namely, the Brans-Dicke parameter, $\\omega$, and the potential-scalar field dependency parameter $n$ respectively. V. Husain's work on exact solution for null fluid collapse in 1996 has influenced many authors to follow his way to find the end-state of the homogeneous/in-homogeneous dust cloud. Vaidya's metric is used all over to follow the nature of future outgoing radial null geodesics. Detecting whether the central singularity is naked or wrapped by an event horizon, by the existence of future directed radial null geodesic emitted in past from the singularity is the basic objective. To point out the existence of positive trajectory tangent solution, both particular parametric cases(through tabular forms) and wide range contouring process have been applied. Precisely, perfect fluid's EoS satisfies a wide range of phenomena : from dust to exotic fluid like dark energy. We have used the EoS parameter $k$ to determine the end state of collapse in different cosmological era. Our main target is to check low $\\omega$ (more deviations from Einstein gravity-more Brans Dicke effect) and negative $k$ zones. This particularly throws light on the nature of the end-state of collapse in accelerated expansion in Brans Dicke gravity. It is seen that for positive values of EoS parameter $k$, the collapse results in a black hole, whereas for negative values of $k$, naked singularity is the only outcome. It is also to be noted that "low $\\omega$" leads to the possibility of getting more naked singularities even for a non-accelerating universe.

  19. A new quasidilaton theory of massive gravity

    E-Print Network [OSTI]

    Shinji Mukohyama

    2014-10-08T23:59:59.000Z

    We present a new quasidilaton theory of Poincare invariant massive gravity, based on the recently proposed framework of matter coupling that makes it possible for the kinetic energy of the quasidilaton scalar to couple to both physical and fiducial metrics simultaneously. We find a scaling-type exact solution that expresses a self-accelerating de Sitter universe, and then analyze linear perturbations around it. It is shown that in a range of parameters all physical degrees of freedom have non-vanishing quadratic kinetic terms and are stable in the subhorizon limit, while the effective Newton's constant for the background is kept positive.

  20. Fractal Spacetime Structure in Asymptotically Safe Gravity

    E-Print Network [OSTI]

    O. Lauscher; M. Reuter

    2005-08-26T23:59:59.000Z

    Four-dimensional Quantum Einstein Gravity (QEG) is likely to be an asymptotically safe theory which is applicable at arbitrarily small distance scales. On sub-Planckian distances it predicts that spacetime is a fractal with an effective dimensionality of 2. The original argument leading to this result was based upon the anomalous dimension of Newton's constant. In the present paper we demonstrate that also the spectral dimension equals 2 microscopically, while it is equal to 4 on macroscopic scales. This result is an exact consequence of asymptotic safety and does not rely on any truncation. Contact is made with recent Monte Carlo simulations.

  1. Gamma Ray Burst Neutrinos Probing Quantum Gravity

    E-Print Network [OSTI]

    M. C. Gonzalez-Garcia; F. Halzen

    2006-11-28T23:59:59.000Z

    Very high energy, short wavelength, neutrinos may interact with the space-time foam predicted by theories of quantum gravity. They would propagate like light through a crystal lattice and be delayed, with the delay depending on the energy. This will appear to the observer as a violation of Lorenz invariance. Back of the envelope calculations imply that observations of neutrinos produced by gamma ray bursts may reach Planck-scale sensitivity. We revisit the problem considering two essential complications: the imprecise timing of the neutrinos associated with their poorly understood production mechanism in the source and the indirect nature of their energy measurement made by high energy neutrino telescopes.

  2. Dynamics of generalized Palatini theories of gravity

    SciTech Connect (OSTI)

    Vitagliano, Vincenzo; Liberati, Stefano [SISSA-International School for Advanced Studies, Via Bonomea 265, 34136 Trieste (Italy) and INFN sezione di Trieste, sezione di Trieste, via Valerio 2, 34127 Trieste (Italy); Sotiriou, Thomas P. [Department of Applied Mathematics and Theoretical Physics, Center for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge, CB3 0WA (United Kingdom)

    2010-10-15T23:59:59.000Z

    It is known that in f(R) theories of gravity with an independent connection which can be both nonmetric and nonsymmetric, this connection can always be algebraically eliminated in favor of the metric and the matter fields, so long as it is not coupled to the matter explicitly. We show here that this is a special characteristic of f(R) actions, and it is not true for actions that include other curvature invariants. This contradicts some recent claims in the literature. We clarify the reasons for this contradiction.

  3. Modification of gravity due to torsion

    SciTech Connect (OSTI)

    Nair, V. P. [Physics Department, City College of the CUNY, New York, NY 10031 (United States); Nikiforova, V. [Physics Department, Mascow State University Moscow (Russian Federation); Randjbar-Daemi, S. [The Abdus Salam International Centre for Theoretical Physics, Trieste (Italy); Rubakov, V. [Institute for Nuclear Research of the Russian Academy of Sciences, Moscow (Russian Federation)

    2010-01-01T23:59:59.000Z

    Modifications of general relativity have been considered as one of the possible ways of addressing some of the outstanding problems related to the large scale gravitational physics. In this contribution we review some of the recent results which are due to the inclusion of dynamical torsion. More specifically we shall discuss the propagation of massive spin-2 particles in flat and curved space times. We shall show that, contrary to what is generally believed, spinning matter is not the sole source of torsion field. A symmetric energy momentum tensor can also couple to torsion degrees of freedom. The massive and massless spin-2 particles mix giving rise to an infrared modification of gravity.

  4. A high frequency resonance gravity gradiometer

    SciTech Connect (OSTI)

    Bagaev, S. N.; Kvashnin, N. L.; Skvortsov, M. N. [Laser Physics Institute SB RAS, Novosibirsc (Russian Federation); Bezrukov, L. B.; Krysanov, V. A. [Institute of Nuclear Physics RAS, Moscow (Russian Federation); Oreshkin, S. I.; Motylev, A. M.; Popov, S. M.; Samoilenko, A. A.; Yudin, I. S. [Lomonosov MSU, Sternberg Astronomical Institute, Moscow (Russian Federation); Rudenko, V. N. [Institute of Nuclear Physics RAS, Moscow (Russian Federation); Lomonosov MSU, Sternberg Astronomical Institute, Moscow (Russian Federation)

    2014-06-15T23:59:59.000Z

    A new setup OGRANóthe large scale opto-acoustical gravitational detector is described. As distinguished from known gravitational bar detectors it uses the optical interferometrical readout for registering weak variations of gravity gradient at the kilohetz frequency region. At room temperature, its sensitivity is limited only by the bar Brownian noise at the bandwidth close to 100 Hz. It is destined for a search for rare eventsógravitational pulses coincident with signals of neutrino scintillator (BUST) in the deep underground of Baksan Neutrino Observatory of INR RAS.

  5. Confronting Dilaton-exchange gravity with experiments

    E-Print Network [OSTI]

    H. V. Klapdor-Kleingrothaus; H. Pšs; U. Sarkar

    2000-08-16T23:59:59.000Z

    We study the experimental constraints on theories, where the equivalence principle is violated by dilaton-exchange contributions to the usual graviton-exchange gravity. We point out that in this case it is not possible to have any CPT violation and hence there is no constraint from the CPT violating measurements in the $K-$system. The most stringent bound is obtained from the $K_L - K_S$ mass difference. In contrast, neither neutrino oscillation experiments nor neutrinoless double beta decay imply significant constraints.

  6. Wave Packets Propagation in Quantum Gravity

    E-Print Network [OSTI]

    Kourosh Nozari; S. H. Mehdipour

    2005-07-03T23:59:59.000Z

    Wave packet broadening in usual quantum mechanics is a consequence of dispersion behavior of the medium which the wave propagates in it. In this paper, we consider the problem of wave packet broadening in the framework of Generalized Uncertainty Principle(GUP) of quantum gravity. New dispersion relations are derived in the context of GUP and it has been shown that there exists a gravitational induced dispersion which leads to more broadening of the wave packets. As a result of these dispersion relations, a generalized Klein-Gordon equation is obtained and its interpretation is given.

  7. Anisotropic higher derivative gravity and inflationary universe

    E-Print Network [OSTI]

    W. F. Kao

    2006-05-21T23:59:59.000Z

    Stability analysis of the Kantowski-Sachs type universe in pure higher derivative gravity theory is studied in details. The non-redundant generalized Friedmann equation of the system is derived by introducing a reduced one dimensional generalized KS type action. This method greatly reduces the labor in deriving field equations of any complicate models. Existence and stability of inflationary solution in the presence of higher derivative terms are also studied in details. Implications to the choice of physical theories are discussed in details in this paper.

  8. Inflationary Universe in Higher Derivative Induced Gravity

    E-Print Network [OSTI]

    W. F. Kao

    2000-06-27T23:59:59.000Z

    In an induced-gravity model, the stability condition of an inflationary slow-rollover solution is shown to be $\\phi_0 \\partial_{\\phi_0}V(\\phi_0)=4V(\\phi_0)$. The presence of higher derivative terms will, however, act against the stability of this expanding solution unless further constraints on the field parameters are imposed. We find that these models will acquire a non-vanishing cosmological constant at the end of inflation. Some models are analyzed for their implication to the early universe.

  9. Loop Quantum Gravity: An Inside View

    E-Print Network [OSTI]

    Thomas Thiemann

    2006-08-29T23:59:59.000Z

    This is a (relatively) non -- technical summary of the status of the quantum dynamics in Loop Quantum Gravity (LQG). We explain in detail the historical evolution of the subject and why the results obtained so far are non -- trivial. The present text can be viewed in part as a response to an article by Nicolai, Peeters and Zamaklar [hep-th/0501114]. We also explain why certain no go conclusions drawn from a mathematically correct calculation in a recent paper by Helling et al [hep-th/0409182] are physically incorrect.

  10. Hall viscosity from gauge/gravity duality

    E-Print Network [OSTI]

    Omid Saremi; Dam Thanh Son

    2011-03-24T23:59:59.000Z

    In (2+1)-dimensional systems with broken parity, there exists yet another transport coefficient, appearing at the same order as the shear viscosity in the hydrodynamic derivative expansion. In condensed matter physics, it is referred to as "Hall viscosity". We consider a simple holographic realization of a (2+1)-dimensional isotropic fluid with broken spatial parity. Using techniques of fluid/gravity correspondence, we uncover that the holographic fluid possesses a nonzero Hall viscosity, whose value only depends on the near-horizon region of the background. We also write down a Kubo's formula for the Hall viscosity. We confirm our results by directly computing the Hall viscosity using the formula.

  11. Thermodynamics of 5D dilaton-gravity

    SciTech Connect (OSTI)

    Megias, E. [Institute for Theoretical Physics, University of Heidelberg (Germany); Instituto de Fisica Teorica CSIC-UAM, Universidad Autonoma de Madrid (Spain)

    2011-05-23T23:59:59.000Z

    We calculate the free energy, spatial string tension and Polyakov loop of the gluon plasma using the dilaton potential of Ref. [1] in the dilaton-gravity theory of AdS/QCD. The free energy is computed from the Black Hole solutions of the Einstein equations in two ways: first, from the Bekenstein-Hawking proportionality of the entropy with the area of the horizon, and secondly from the Page-Hawking computation of the free energy. The finite temperature behaviour of the spatial string tension and Polyakov loop follow from the corresponding string theory in AdS{sub 5}. Comparison with lattice data is made.

  12. Holographic renormalization of new massive gravity

    SciTech Connect (OSTI)

    Alishahiha, Mohsen [School of Physics, Institute for Research in Fundamental Sciences (IPM), P.O. Box 19395-5531, Tehran (Iran, Islamic Republic of); Naseh, Ali [School of Physics, Institute for Research in Fundamental Sciences (IPM), P.O. Box 19395-5531, Tehran (Iran, Islamic Republic of); Department of Physics, Sharif University of Technology, P.O. Box 11365-9161, Tehran (Iran, Islamic Republic of)

    2010-11-15T23:59:59.000Z

    We study holographic renormalization for three-dimensional new massive gravity. By studying the general falloff conditions for the metric allowed by the model at infinity, we show that at the critical point where the central charges of the dual conformal field theory (CFT) are zero, it contains a leading logarithmic behavior. In the context of AdS/CFT correspondence it can be identified as a source for an irrelevant operator in the dual CFT. The presence of the logarithmic falloff may be interpreted as the fact that the dual CFT would be a logarithmic conformal field theory.

  13. Gravity dual of spatially modulated phase

    SciTech Connect (OSTI)

    Nakamura, Shin [Department of Physics, Kyoto University, Kyoto 606-8502 (Japan); Ooguri, Hirosi [California Institute of Technology, Pasadena, California 91125 (United States); IPMU, University of Tokyo, Kashiwa 277-8586 (Japan); Park, Chang-Soon [California Institute of Technology, Pasadena, California 91125 (United States)

    2010-02-15T23:59:59.000Z

    We show that the five-dimensional Maxwell theory with the Chern-Simons term is tachyonic in the presence of a constant electric field. When coupled to gravity, a sufficiently large Chern-Simons coupling causes instability of the Reissner-Nordstroem black holes in anti-de Sitter space. The instability happens only at nonvanishing momenta, suggesting a spatially modulated phase in the holographically dual quantum field theory in (3+1) dimensions, with spontaneous current generation in a helical configuration. The three-charge extremal black hole in the type IIB superstring theory on AdS{sub 5}xS{sup 5} barely satisfies the stability condition.

  14. Apparent horizon in fluid-gravity duality

    SciTech Connect (OSTI)

    Booth, Ivan; Heller, Michal P.; Plewa, Grzegorz; Spalinski, Michal [Department of Mathematics and Statistics, Memorial University of Newfoundland, St. John's, Newfoundland and Labrador, A1C 5S7 (Canada); Instituut voor Theoretische Fysica, Universiteit van Amsterdam, Science Park 904, 1090 GL Amsterdam (Netherlands); Soltan Institute for Nuclear Studies, Hoza 69, 00-681 Warsaw (Poland); Soltan Institute for Nuclear Studies, Hoza 69, 00-681 Warsaw (Poland) and Physics Department, University of Bialystok, 15-424 Bialystok (Poland)

    2011-05-15T23:59:59.000Z

    This article develops a computational framework for determining the location of boundary-covariant apparent horizons in the geometry of conformal fluid-gravity duality in arbitrary dimensions. In particular, it is shown up to second order and conjectured to hold to all orders in the gradient expansion that there is a unique apparent horizon which is covariantly expressible in terms of fluid velocity, temperature, and boundary metric. This leads to the first explicit example of an entropy current defined by an apparent horizon and opens the possibility that in the near-equilibrium regime there is preferred foliation of apparent horizons for black holes in asymptotically anti-de Sitter spacetimes.

  15. Seven-dimensional gravity with topological terms

    SciTech Connect (OSTI)

    Lue, H. [China Economics and Management Academy Central, University of Finance and Economics, Beijing 100081 (China); Institute for Advanced Study, Shenzhen University, Nanhai Ave 3688, Shenzhen 518060 (China); Pang Yi [Key Laboratory of Frontiers in Theoretical Physics Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190 (China)

    2010-04-15T23:59:59.000Z

    We construct new seven-dimensional gravity by adding two topological terms to the Einstein-Hilbert action. For a certain choice of the coupling constants, these terms exist naturally in seven-dimensional gauged supergravity from the S{sup 4} reduction of eleven-dimensional supergravity with the R{sup 4} corrections. We derive the full set of the equations of motion. We find that the static spherically-symmetric black holes are unmodified by the topological terms. We obtain squashed AdS{sub 7}, and also squashed seven spheres and Q{sup 111} spaces in Euclidean signature.

  16. Drag phenomena from holographic massive gravity

    E-Print Network [OSTI]

    Matteo Baggioli; Daniel K. Brattan

    2015-04-28T23:59:59.000Z

    We consider the motion of point particles in a strongly coupled field theory with broken translation invariance. We obtain the energy and momentum loss rates and drag coefficients for a class of such particles by solving for the motion of classical strings in holographic massive gravity. At low temperatures compared to the graviton mass the behaviour of the string is controlled by the appearance of an exotic ground state with non-zero entropy at zero temperature. Additionally we find an upper bound on the diffusion constant for a collection of these particles which is saturated when the mass of the graviton goes to zero.

  17. Drag phenomena from holographic massive gravity

    E-Print Network [OSTI]

    Baggioli, Matteo

    2015-01-01T23:59:59.000Z

    We consider the motion of point particles in a strongly coupled field theory with broken translation invariance. We obtain the energy and momentum loss rates and drag coefficients for a class of such particles by solving for the motion of classical strings in holographic massive gravity. At low temperatures compared to the graviton mass the behaviour of the string is controlled by the appearance of an exotic ground state with non-zero entropy at zero temperature. Additionally we find an upper bound on the diffusion constant for a collection of these particles which is saturated when the mass of the graviton goes to zero.

  18. Category:Gravity Techniques | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty EditCalifornia:Power LPInformationCashton GreensVisualizations.inGravity

  19. Moho topography beneath the Corinth Rift area (Greece) from inversion of gravity data

    E-Print Network [OSTI]

    Demouchy, Sylvie

    Moho topography beneath the Corinth Rift area (Greece) from inversion of gravity data C. Tiberi,1 to Miocene lithospheric instabilities. Key words: boudinage, continental rifts, gravity inversion, Greece

  20. ZEOLITE CATALYSIS - TECHNOLOGY

    E-Print Network [OSTI]

    Heinemann, Heinz

    2013-01-01T23:59:59.000Z

    and after Hydrodewaxing with 2SH-5 Virgin heavy gas oil MMDWprocessed heavy gas oil Properties Gravity, API Pour point,

  1. Gravity waves excited by jets: Propagation versus generation R. Plougonven

    E-Print Network [OSTI]

    Plougonven, Riwal

    Gravity waves excited by jets: Propagation versus generation R. Plougonven School of Mathematics imposed by the generation mechanism. In proceeding so, effects due to the propagation of the waves through simulations demonstrate that the propagation of inertia-gravity waves through horizontal deformation

  2. Gravity Field and Internal Structure of Mercury from MESSENGER

    E-Print Network [OSTI]

    Zuber, Maria

    ,5 Mark E. Perry,11 David D. Rowlands,5 Sander Goossens,12 James W. Head,13 Anthony H. Taylor14 RadioGravity Field and Internal Structure of Mercury from MESSENGER David E. Smith,1 Maria T. Zuber,1 tracking of the MESSENGER spacecraft has provided a model of Mercury's gravity field. In the northern

  3. Wavelet based inversion of gravity data Fabio Boschetti

    E-Print Network [OSTI]

    Boschetti, Fabio

    1 Wavelet based inversion of gravity data Fabio Boschetti CSIRO Exploration & Mining and Australian Running Heading: Wavelet based inversion of gravity data #12;2 ABSTRACT The Green's function of the Poisson equation, and its spatial derivatives, lead to a family of wavelets specifically tailored

  4. Cosmological evolutions of $F(R)$ nonlinear massive gravity

    E-Print Network [OSTI]

    De-Jun Wu

    2014-03-24T23:59:59.000Z

    Recently a new extended nonlinear massive gravity model has been proposed which includes the $F(R)$ modifications to dRGT model.We follow the $F(R)$ nonlinear massive gravity and study its implications on cosmological evolutions. We derive the critical points of the cosmic system and study the corresponding kinetics by performing the phase-plane analysis.

  5. Mapping crustal thickness using marine gravity data: Methods and uncertainties

    E-Print Network [OSTI]

    MŁller, Dietmar

    of petroleum systems within passive margins. However, direct measurements of crustal thickness are sparse geophysical data, to estimate crustal thickness. We evaluated alternative gravity inversion methodol- ogies, but economic considerations make gravity modeling a more practical approach for mapping crustal thickness over

  6. On coupling NEC-violating matter to gravity

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Chatterjee, Saugata; Parikh, Maulik; van der Schaar, Jan Pieter

    2015-05-01T23:59:59.000Z

    We show that effective theories of matter that classically violate the null energy condition cannot be minimally coupled to Einstein gravity without being inconsistent with both string theory and black hole thermodynamics. We argue however that they could still be either non-minimally coupled or coupled to higher-curvature theories of gravity.

  7. Notes 04. Elements of analytical dynamics.

    E-Print Network [OSTI]

    San Andres, Luis

    2008-01-01T23:59:59.000Z

    T is 1 11 1 111 1 2 1 2 1 2 1 2 N ii i i Nn n ii ii ir s ir s rs Nnn n ii i i ii irss irs s rs s mr r m tt m ttt T rr rr qq rr r r rr Tqqq qq q = == = === = ? ???? ???? ++ ???? ???? ?? ?? ?? ++? ?? ?? == ?? ?? ? ????? = ? ? ?? ? ??? ? #0;G#0;G #0... with the directions of the generalized displacements, thus () 11 2 2 1 .... n nc n n s s s WQqQq Qq Qq? ?? ? ? = =++ ? (41) Note that the generalized force Q k may NOT need to actually represent a force or a moment. However, the product Q k ?q k MUST...

  8. ConsumTechNotes2012.vp

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Year-0E (2001)gasoline prices4Consumption TheX I AConsumptionNote: The

  9. ConsumTechNotes2012.vp

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Year-0E (2001)gasoline prices4Consumption TheX I AConsumptionNote:

  10. ConsumTechNotes2012.vp

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Year-0E (2001)gasoline prices4Consumption TheX I AConsumptionNote:

  11. Property:ExplorationNotes | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation,PillarPublicationTypeEstimatedCostMedianUSDExplorationNotes Jump to: navigation,

  12. Manhattan Project: A Note on Sources

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem NotEnergy, science, and technology-- Energy, science, andD ModelWidgetA NOTE ON

  13. Dipole gravity waves from unbound quadrupoles

    E-Print Network [OSTI]

    Felber, Franklin

    2010-01-01T23:59:59.000Z

    Dipole gravitational disturbances from gravitationally unbound mass quadrupoles propagate to the radiation zone with signal strength at least of quadrupole order if the quadrupoles are nonrelativistic, and of dipole order if relativistic. Angular distributions of parallel-polarized and transverse-polarized dipole power in the radiation zone are calculated for simple unbound quadrupoles, like a linear-oscillator/stress-wave pair and a particle storage ring. Laboratory tests of general relativity through measurements of dipole gravity waves in the source region are proposed. A NASA G2 flywheel module with a modified rotor can produce a post-Newtonian dc bias signal at a gradiometer up to 1 mE. At peak luminosity, the repulsive dipole impulses of proton bunches at the LHC can produce an rms velocity of a high-Q detector surface up to 4 micron/s. Far outside the source region, Newtonian lunar dipole gravity waves can produce a 1-cm displacement signal at LISA. Dipole signal strengths of astrophysical events invol...

  14. Dipole gravity waves from unbound quadrupoles

    E-Print Network [OSTI]

    Franklin Felber

    2010-06-10T23:59:59.000Z

    Dipole gravitational disturbances from gravitationally unbound mass quadrupoles propagate to the radiation zone with signal strength at least of quadrupole order if the quadrupoles are nonrelativistic, and of dipole order if relativistic. Angular distributions of parallel-polarized and transverse-polarized dipole power in the radiation zone are calculated for simple unbound quadrupoles, like a linear-oscillator/stress-wave pair and a particle storage ring. Laboratory tests of general relativity through measurements of dipole gravity waves in the source region are proposed. A NASA G2 flywheel module with a modified rotor can produce a post-Newtonian dc bias signal at a gradiometer up to 1 mE. At peak luminosity, the repulsive dipole impulses of proton bunches at the LHC can produce an rms velocity of a high-Q detector surface up to 4 micron/s. Far outside the source region, Newtonian lunar dipole gravity waves can produce a 1-cm displacement signal at LISA. Dipole signal strengths of astrophysical events involving unbound quadrupoles, like near collisions and neutron star kicks in core-collapse supernovae, are estimated.

  15. A dynamical inconsistency of Horava gravity

    SciTech Connect (OSTI)

    Henneaux, Marc [Universite Libre de Bruxelles and International Solvay Institutes, ULB-Campus Plaine CP231, 1050 Brussels (Belgium); Centro de Estudios Cientificos (CECS), Casilla 1469, Valdivia (Chile); Kleinschmidt, Axel; Lucena Gomez, Gustavo [Universite Libre de Bruxelles and International Solvay Institutes, ULB-Campus Plaine CP231, 1050 Brussels (Belgium)

    2010-03-15T23:59:59.000Z

    The dynamical consistency of the nonprojectable version of Horava gravity is investigated by focusing on the asymptotically flat case. It is argued that for generic solutions of the constraint equations the lapse must vanish asymptotically. We then consider particular values of the coupling constants for which the equations are tractable and in that case we prove that the lapse must vanish everywhere--and not only at infinity. Put differently, the Hamiltonian constraints are generically all second-class. We then argue that the same feature holds for generic values of the couplings, thus revealing a physical inconsistency of the theory. In order to cure this pathology, one might want to introduce further constraints but the resulting theory would then lose much of the appeal of the original proposal by Horava. We also show that there is no contradiction with the time-reparametrization invariance of the action, as this invariance is shown to be a so-called 'trivial gauge symmetry' in Horava gravity, hence with no associated first-class constraints.

  16. Spherically symmetric conformal gravity and "gravitational bubbles"

    E-Print Network [OSTI]

    V. A. Berezin; V. I. Dokuchaev; Yu. N. Eroshenko

    2014-12-09T23:59:59.000Z

    The general structure of the spherically symmetric solutions in the Weyl conformal gravity is described. The corresponding Bach equation are derived for the special type of metrics, which can be considered as the representative of the general class. The complete set of the pure vacuum solutions is found. It consists of two classes. The first one contains the solutions with constant two-dimensional curvature scalar of our specific metrics, and the representatives are the famous Robertson-Walker metrics. One of them we called the "gravitational bubbles", which is compact and with zero Weyl tensor. The second class is more general, with varying curvature scalar. We found its representative as the one-parameter family. It appears that it can be conformally covered by the thee-parameter Mannheim-Kazanas solution. We also investigated the general structure of the energy-momentum tensor in the spherical conformal gravity and constructed the vectorial equation that reveals clearly the same features of non-vacuum solutions. One of them, the metrics a la Vaidya, is explicitly written.

  17. Vacuum energy: quantum hydrodynamics vs quantum gravity

    E-Print Network [OSTI]

    G. E. Volovik

    2005-09-09T23:59:59.000Z

    We compare quantum hydrodynamics and quantum gravity. They share many common features. In particular, both have quadratic divergences, and both lead to the problem of the vacuum energy, which in the quantum gravity transforms to the cosmological constant problem. We show that in quantum liquids the vacuum energy density is not determined by the quantum zero-point energy of the phonon modes. The energy density of the vacuum is much smaller and is determined by the classical macroscopic parameters of the liquid including the radius of the liquid droplet. In the same manner the cosmological constant is not determined by the zero-point energy of quantum fields. It is much smaller and is determined by the classical macroscopic parameters of the Universe dynamics: the Hubble radius, the Newton constant and the energy density of matter. The same may hold for the Higgs mass problem: the quadratically divergent quantum correction to the Higgs potential mass term is also cancelled by the microscopic (trans-Planckian) degrees of freedom due to thermodynamic stability of the whole quantum vacuum.

  18. Bigravity and Lorentz-violating massive gravity

    SciTech Connect (OSTI)

    Blas, D.; Garriga, J. [ICC, Departament de Fisica Fonamental, Universitat de Barcelona, Diagonal 647, 08028 Barcelona (Spain); Deffayet, C. [APC, Batiment Condorcet, 10 rue Alice Domont et Leonie Duquet, 75205 Paris Cedex 13 (France); GReCO/IAP, 98 bis Boulevard Arago, 75014 Paris (France)

    2007-11-15T23:59:59.000Z

    Bigravity is a natural arena where a nonlinear theory of massive gravity can be formulated. If the interaction between the metrics f and g is nonderivative, spherically symmetric exact solutions can be found. At large distances from the origin, these are generically Lorentz-breaking bi-flat solutions (provided that the corresponding vacuum energies are adjusted appropriately). The spectrum of linearized perturbations around such backgrounds contains a massless as well as a massive graviton, with two physical polarizations each. There are no propagating vectors or scalars, and the theory is ghost free (as happens with certain massive gravities with explicit breaking of Lorentz invariance). At the linearized level, corrections to general relativity are proportional to the square of the graviton mass, and so there is no van Dam-Veltam-Zakharov discontinuity. Surprisingly, the solution of linear theory for a static spherically symmetric source does not agree with the linearization of any of the known exact solutions. The latter coincide with the standard Schwarzschild-(anti)-de Sitter solutions of general relativity, with no corrections at all. Another interesting class of solutions is obtained where f and g are proportional to each other. The case of bi-de Sitter solutions is analyzed in some detail.

  19. Canonical Quantum Gravity on Noncommutative Spacetime

    E-Print Network [OSTI]

    Martin Kober

    2014-09-04T23:59:59.000Z

    In this paper canonical quantum gravity on noncommutative space-time is considered. The corresponding generalized classical theory is formulated by using the moyal star product, which enables the representation of the field quantities depending on noncommuting coordinates by generalized quantities depending on usual coordinates. But not only the classical theory has to be generalized in analogy to other field theories. Besides, the necessity arises to replace the commutator between the gravitational field operator and its canonical conjugated quantity by a corresponding generalized expression on noncommutative space-time. Accordingly the transition to the quantum theory has also to be performed in a generalized way and leads to extended representations of the quantum theoretical operators. If the generalized representations of the operators are inserted to the generalized constraints, one obtains the corresponding generalized quantum constraints including the Hamiltonian constraint as dynamical constraint. After considering quantum geometrodynamics under incorporation of a coupling to matter fields, the theory is transferred to the Ashtekar formalism. The holonomy representation of the gravitational field as it is used in loop quantum gravity opens the possibility to calculate the corresponding generalized area operator.

  20. Tyndall Briefing Note No. 35 Tyndall Briefing Note No. 35 April 2009

    E-Print Network [OSTI]

    Watson, Andrew

    of East Anglia This Briefing Note is the first in a series of opinion pieces from Tyndall Centre The past 50 years: It is undeniable that over the past fifty years, agricultural science and new. The challenge: In coming decades we need to double food production, meet food safety standards, enhance rural

  1. BEG/CEE-UT Think Corner Research Note, June 2012, 1 Think Corner Research Note

    E-Print Network [OSTI]

    Texas at Austin, University of

    : Analysis based on U.S. EIA regional data. #12;© BEG/CEE-UT Think Corner Research Note, 18 May 2012, 2 Two natural gas production. Our methodology is a "top down" approach based on corporate financial reports periodic tracking as well as extension and expansion of our producer survey. 2 1 Foss, M.M., M. Wainberg

  2. Queer as 2 Three Pound Notes #2

    E-Print Network [OSTI]

    Multiple Contributors

    1991-01-01T23:59:59.000Z

    ?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3 TWO ?3 NOTES ?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3 ?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3 Issue Number Two in the BENT COPPERS Series ?3?3?3...?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3 ?AS ?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3 ?3?3?3 ?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?3?AS TWO ?3 NOTES?3?3?3...

  3. Dr. T.P. Clement CE 3010 class notes

    E-Print Network [OSTI]

    Clement, Prabhakar

    8/15/2011 1 Dr. T.P. Clement CE 3010 class notes Learning Objectives ∑ Motivation ∑ Basic approach value of the definite integral 2 b a dxxf )( Dr. T.P. Clement CE 3010 class notes Analytical (or exact a dxxf )( Dr. T.P. Clement CE 3010 class notes Trapezoidal Rule F(x) #12;8/15/2011 2 Dr. T.P. Clement CE

  4. Testing Chern-Simons modified gravity with orbiting superconductive gravity gradiometers --- The non-dynamical formulation

    E-Print Network [OSTI]

    Li-E Qiang; Peng Xu

    2015-02-16T23:59:59.000Z

    High precision Superconductivity Gravity Gradiometers (SGG) are powerful tools for relativistic experiments. In this paper, we work out the tidal signals in non-dynamical Chern-Simons modified gravity, which could be measured by orbiting SGGs around Earth. We find that, with proper orientations of multi-axes SGGs, the tidal signals from the Chern-Simons modification can be isolated in the combined data of different axes. Furthermore, for three-axes SGGs, such combined data is the trace of the total tidal matrix, which is invariant under the rotations of SGG axes and thus free from axis pointing errors. Following nearly circular orbits, the tests of the parity-violating Chern-Simons modification and the measurements of the gravitomagnetic sector in parity-conserving metric theories can be carried out independently in the same time. A first step analysis on noise sources is also included.

  5. Testing Chern-Simons modified gravity with orbiting superconductive gravity gradiometers --- The non-dynamical formulation

    E-Print Network [OSTI]

    Qiang, Li-E

    2015-01-01T23:59:59.000Z

    High precision Superconductivity Gravity Gradiometers (SGG) are powerful tools for relativistic experiments. In this paper, we work out the tidal signals in non-dynamical Chern-Simons modified gravity, which could be measured by orbiting SGGs around Earth. We find that, with proper orientations of multi-axes SGGs, the tidal signals from the Chern-Simons modification can be isolated in the combined data of different axes. Furthermore, for three-axes SGGs, such combined data is the trace of the total tidal matrix, which is invariant under the rotations of SGG axes and thus free from axis pointing errors. Following nearly circular orbits, the tests of the parity-violating Chern-Simons modification and the measurements of the gravitomagnetic sector in parity-conserving metric theories can be carried out independently in the same time. A first step analysis on noise sources is also included.

  6. Gravity-anti-Gravity Symmetric Mini-Superspace: Quantum Entanglement and Cosmological Scale Factor Grid

    E-Print Network [OSTI]

    Aharon Davidson; Tomer Ygael

    2014-10-22T23:59:59.000Z

    A gravity-anti-gravity (GaG) odd linear dilaton action offers an eternal inflation evolution governed by the unified (cosmological constant plus radiation) equation of state $\\rho-3P=4\\Lambda$. At the mini superspace level, a 'two-particle' variant of the no-boundary proposal, notably 'one-particle' energy dependent, is encountered. While a GaG-odd wave function can only host a weak Big Bang boundary condition, albeit for any $k$, a strong Big Bang boundary condition requires a GaG-even entangled wave function, and singles out $k=0$ flat space. The locally most probable values for the cosmological scale factor and the dilaton field form a grid $\\{a^2,a\\phi\\}\\sim\\sqrt{4n_1+1}\\pm\\sqrt{4n_2+1}$.

  7. Optimization Online - Note: Optimal non-homogeneous composites ...

    E-Print Network [OSTI]

    Tavakoli Rouhollah

    2012-08-29T23:59:59.000Z

    Aug 29, 2012 ... Note: Optimal non-homogeneous composites for dynamic loading revisited. Tavakoli Rouhollah (rtavakoli ***at*** sharif.ir). Abstract: The†...

  8. A Note on KKT Points of Homogeneous Programs 1'

    E-Print Network [OSTI]

    2005-07-11T23:59:59.000Z

    A Note on KKT Points of Homogeneous Programs 1'. Y. B. Zhao 2 and D. Li 3. Abstract. Homogeneous programming is an important class of optimization†...

  9. A note on complexity of multistage stochastic programs

    E-Print Network [OSTI]

    Marcus de Mendes C. R. Reaiche

    2014-11-20T23:59:59.000Z

    Nov 20, 2014 ... A note on complexity of multistage stochastic programs. Marcus de Mendes C. R. Reaiche(mmcr ***at*** impa.br). Abstract: In Shapiro [2006],†...

  10. Notes 06. Liquid cavitation in fluid film bearings

    E-Print Network [OSTI]

    San Andres, Luis

    2009-01-01T23:59:59.000Z

    NOTES 6. CAVITATION IN LIQUID FILM BEARINGS. Dr. Luis San Andr?s ? 2009 1 NOTES 6. LIQUID CAVITATION IN FLUID FILM BEARINGS Lecture 6 describes the phenomenon of liquid cavitation in steadily loaded fluid film bearings and notes the most... ? Density at Pcav [kg/m 3 ] ? Fluid absolute viscosity [N.s/m 2 ] ? Journal angular speed (rad/s) Subscripts * Inception of the cavitation zone a Ambient value cav Cavitation NOTES 6. CAVITATION IN LIQUID FILM BEARINGS. Dr. Luis San Andr?s ? 2009...

  11. Solar system tests of Ho?ava-Lifshitz gravity

    E-Print Network [OSTI]

    Tiberiu Harko; Zoltan KovŠcs; Francisco S. N. Lobo

    2010-10-28T23:59:59.000Z

    Recently, a renormalizable gravity theory with higher spatial derivatives in four dimensions was proposed by Ho\\v{r}ava. The theory reduces to Einstein gravity with a non-vanishing cosmological constant in IR, but it has improved UV behaviors. The spherically symmetric black hole solutions for an arbitrary cosmological constant, which represent the generalization of the standard Schwarzschild-(A)dS solution, has also been obtained for the Ho\\v{r}ava-Lifshitz theory. The exact asymptotically flat Schwarzschild type solution of the gravitational field equations in Ho\\v{r}ava gravity contains a quadratic increasing term, as well as the square root of a fourth order polynomial in the radial coordinate, and it depends on one arbitrary integration constant. The IR modified Ho\\v{r}ava gravity seems to be consistent with the current observational data, but in order to test its viability more observational constraints are necessary. In the present paper we consider the possibility of observationally testing Ho\\v{r}ava gravity at the scale of the Solar System, by considering the classical tests of general relativity (perihelion precession of the planet Mercury, deflection of light by the Sun and the radar echo delay) for the spherically symmetric black hole solution of Ho\\v{r}ava-Lifshitz gravity. All these gravitational effects can be fully explained in the framework of the vacuum solution of the gravity. Moreover, the study of the classical general relativistic tests also constrain the free parameter of the solution.

  12. Goedel-type universes in f(R) gravity

    SciTech Connect (OSTI)

    Reboucas, M. J. [Centro Brasileiro de Pesquisas Fisicas, Rua Dr. Xavier Sigaud 150, 22290-180 Rio de Janeiro-RJ (Brazil); Santos, J. [Universidade Federal do Rio G. do Norte, Departamento de Fisica, 59072-970 Natal-RN (Brazil)

    2009-09-15T23:59:59.000Z

    The f(R) gravity theories provide an alternative way to explain the current cosmic acceleration without a dark energy matter component. If gravity is governed by a f(R) theory, a number of issues should be reexamined in this framework, including the violation of causality problem on nonlocal scale. We examine the question as to whether the f(R) gravity theories permit space-times in which the causality is violated. We show that the field equations of these f(R) gravity theories do not exclude solutions with breakdown of causality for a physically well-motivated perfect-fluid matter content. We demonstrate that every perfect-fluid Goedel-type solution of a generic f(R) gravity satisfying the condition df/dR>0 is necessarily isometric to the Goedel geometry, and therefore presents violation of causality. This result extends a theorem on Goedel-type models, which has been established in the context of general relativity. We also derive an expression for the critical radius r{sub c} (beyond which the causality is violated) for an arbitrary f(R) theory, making apparent that the violation of causality depends on both the f(R) gravity theory and the matter content. As an illustration, we concretely take a recent f(R) gravity theory that is free from singularities of the Ricci scalar and is cosmologically viable, and show that this theory accommodates noncausal as well as causal Goedel-type solutions.

  13. On the condensed matter scheme for emergent gravity and interferometry

    E-Print Network [OSTI]

    G. Jannes

    2008-11-10T23:59:59.000Z

    An increasingly popular approach to quantum gravity rests on the idea that gravity (and maybe electromagnetism and the other gauge fields) might be an 'emergent phenomenon', in the sense of representing a collective behaviour resulting from a very different microscopic physics. A prominent example of this approach is the condensed matter scheme for quantum gravity, which considers the possibility that gravity emerges as an effective low-energy phenomenon from the quantum vacuum in a way similar to the emergence of collective excitations in condensed matter systems. This condensed matter view of the quantum vacuum clearly hints that, while the term 'ether' has been discredited for about a century, quantum gravity holds many (if not all) of the characteristics that have led people in the past to label various hypothetical substances with the term 'ether'. Since the last burst of enthusiasm for an ether, at the end of the 19th century, was brought to the grave in part by the performance of a series of important experiments in interferometry, the suggestion then naturally arises that maybe interferometry could also play a role in the current discussion on quantum gravity. We will highlight some aspects of this suggestion in the context of the condensed matter scheme for emergent gravity.

  14. Sulfur Content, Weighted Average Refinery Crude Oil Input Qualities

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are nowTotal" (Percent) Type: Sulfur Content API Gravity Period: Monthly Annual Download Series History Download Series History Definitions, Sources & Notes Definitions,

  15. Summary of AEO2015 Renewable Electricity Working Group Meeting

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are nowTotal" (Percent) Type: Sulfur Content API Gravity Period: Monthly Annual Download Series History Download Series History Definitions, Sources & Notes

  16. Summary of First AEO2014 Electricity Working Group Meeting

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are nowTotal" (Percent) Type: Sulfur Content API Gravity Period: Monthly Annual Download Series History Download Series History Definitions, Sources & Notes9, 2013

  17. Summary of First AEO2015 Electricity Working Group Meeting

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are nowTotal" (Percent) Type: Sulfur Content API Gravity Period: Monthly Annual Download Series History Download Series History Definitions, Sources & Notes9, 2013August 8,

  18. Summary of Second AEO 2014 Electricity Working Group Meeting

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are nowTotal" (Percent) Type: Sulfur Content API Gravity Period: Monthly Annual Download Series History Download Series History Definitions, Sources & Notes9, 2013August

  19. Summary of Second AEO 2015 Working Group Meeting

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are nowTotal" (Percent) Type: Sulfur Content API Gravity Period: Monthly Annual Download Series History Download Series History Definitions, Sources & Notes9,

  20. Summary of the MECS 2002 User Needs Questionnaire

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are nowTotal" (Percent) Type: Sulfur Content API Gravity Period: Monthly Annual Download Series History Download Series History Definitions, Sources & Notes9, View 2002

  1. Supply and Disposition of Crude Oil and Petroleum Products

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are nowTotal" (Percent) Type: Sulfur Content API Gravity Period: Monthly Annual Download Series History Download Series History Definitions, Sources & Notes9, View

  2. Supply and Disposition of Crude Oil and Petroleum Products

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are nowTotal" (Percent) Type: Sulfur Content API Gravity Period: Monthly Annual Download Series History Download Series History Definitions, Sources & Notes9,

  3. Supply and Disposition of Crude Oil and Petroleum Products

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are nowTotal" (Percent) Type: Sulfur Content API Gravity Period: Monthly Annual Download Series History Download Series History Definitions, Sources & Notes9,11,685

  4. Supply and Disposition of Crude Oil and Petroleum Products

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are nowTotal" (Percent) Type: Sulfur Content API Gravity Period: Monthly Annual Download Series History Download Series History Definitions, Sources & Notes9,11,685243

  5. Supply and Disposition of Crude Oil and Petroleum Products

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are nowTotal" (Percent) Type: Sulfur Content API Gravity Period: Monthly Annual Download Series History Download Series History Definitions, Sources & Notes9,11,685243258

  6. Black Hole Thermodynamics in Modified Gravity

    E-Print Network [OSTI]

    Jonas R. Mureika; John W. Moffat; Mir Faizal

    2015-03-03T23:59:59.000Z

    We analyze the thermodynamics of a non-rotating and rotating black hole in a modified theory of gravity that includes scalar and vector modifications to general relativity, which results in a modified gravitational constant $G = G_N(1+\\alpha)$ and a new gravitational charge $Q = \\sqrt{\\alpha G_N}M$. The influence of the parameter $\\alpha$ alters the non-rotating black hole's lifetime, temperature and entropy profiles from the standard Schwarzschild case. The thermodynamics of a rotating black hole is analyzed and it is shown to possess stable, cold remnants. The thermodynamic properties of a vacuum solution regular at $r=0$ are investigated and the solution without a horizon called a "gray hole" is not expected to possess an information loss problem.

  7. Quantum Mechanics, Gravity, and the Multiverse

    E-Print Network [OSTI]

    Yasunori Nomura

    2012-07-30T23:59:59.000Z

    The discovery of accelerating expansion of the universe has led us to take the dramatic view that our universe may be one of the many universes in which low energy physical laws take different forms: the multiverse. I explain why/how this view is supported both observationally and theoretically, especially by string theory and eternal inflation. I then describe how quantum mechanics plays a crucial role in understanding the multiverse, even at the largest distance scales. The resulting picture leads to a revolutionary change of our view of spacetime and gravity, and completely unifies the paradigm of the eternally inflating multiverse with the many worlds interpretation of quantum mechanics. The picture also provides a solution to a long-standing problem in eternal inflation, called the measure problem, which I briefly describe.

  8. Kinetic Gravity Braiding and axion inflation

    E-Print Network [OSTI]

    Debaprasad Maity

    2013-03-11T23:59:59.000Z

    We constructed a new class of inflationary model with the higher derivative axion field which obeys constant shift symmetry. In the usual axion (natural) inflation, the axion decay constant is predicted to be in the super-Planckian regime which is believed to be incompatible with an effective field theory framework. With a novel mechanism originating from a higher derivative kinetic gravity braiding (KGB) of an axion field we found that there exist a huge parameter regime in our model where axion decay constant could be naturally sub-Planckian. Thanks to the KGB which effectively reduces the Planck constant. This effectively reduced Planck scale provides us the mechanism of further lowering down the speed of an axion field rolling down its potential without introducing super-Planckian axion decay constant. We also find that with that wide range of parameter values, our model induces almost scale invariant power spectrum as observed in CMB experiments.

  9. A length operator for canonical quantum gravity

    E-Print Network [OSTI]

    T. Thiemann

    1996-06-29T23:59:59.000Z

    We construct an operator that measures the length of a curve in four-dimensional Lorentzian vacuum quantum gravity. We work in a representation in which a $SU(2)$ connection is diagonal and it is therefore surprising that the operator obtained after regularization is densely defined, does not suffer from factor ordering singularities and does not require any renormalization. We show that the length operator admits self-adjoint extensions and compute part of its spectrum which like its companions, the volume and area operators already constructed in the literature, is purely discrete and roughly is quantized in units of the Planck length. The length operator contains full and direct information about all the components of the metric tensor which faciliates the construction of a new type of weave states which approximate a given classical 3-geometry.

  10. Bi-metric Gravity and "Dark Matter"

    E-Print Network [OSTI]

    I. T. Drummond

    2000-08-18T23:59:59.000Z

    We present a bi-metric theory of gravity containing a length scale of galactic size. For distances less than this scale the theory satisfies the standard tests of General Relativity. For distances greater than this scale the theory yields an effective gravitational constant much larger than the locally observed value of Newton's constant. The transition from one regime to the other through the galactic scale can explain the observed rotation curves of galaxies and hence the effects normally attributed to the presence of dark matter. Phenomena on an extragalactic scale such as galactic clusters and the expansion of the universe are controlled by the enhanced gravitational coupling. This provides an explanation of the missing matter normally invoked to account for the observed value of Hubble's constant in relation to observed matter.

  11. QCD thermodynamics using five-dimensional gravity

    SciTech Connect (OSTI)

    Megias, E.; Veschgini, K. [Institute for Theoretical Physics, University of Heidelberg (Germany); Pirner, H. J. [Institute for Theoretical Physics, University of Heidelberg (Germany); Max Planck Institute for Nuclear Physics, Heidelberg (Germany)

    2011-03-01T23:59:59.000Z

    We calculate the critical temperature and free energy of the gluon plasma using the dilaton potential [B. Galow, E. Megias, J. Nian, and H. J. Pirner, Nucl. Phys. B834, 330 (2010).] in the gravity theory of anti-de Sitter/QCD. The finite temperature observables are calculated in two ways: first, from the Page-Hawking computation of the free energy, and secondly using the Bekenstein-Hawking proportionality of the entropy with the area of the horizon. Renormalization is well defined, because the T=0 theory has asymptotic freedom. We further investigate the change of the critical temperature with the number of flavors induced by the change of the running coupling constant in the quenched theory. The finite temperature behavior of the speed of sound, spatial string tension and vacuum expectation value of the Polyakov loop follow from the corresponding string theory in AdS{sub 5}.

  12. More on massive 3D gravity

    SciTech Connect (OSTI)

    Bergshoeff, Eric A.; Hohm, Olaf [Centre for Theoretical Physics, University of Groningen, Nijenborgh 4, 9747 AG Groningen (Netherlands); Townsend, Paul K. [Department of Applied Mathematics and Theoretical Physics, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge, CB3 0WA (United Kingdom)

    2009-06-15T23:59:59.000Z

    We explore the space of static solutions of the recently discovered three-dimensional 'new massive gravity' (NMG), allowing for either sign of the Einstein-Hilbert term and a cosmological term parametrized by a dimensionless constant {lambda}. For {lambda}=-1 we find black hole solutions asymptotic (but not isometric) to the unique (anti) de Sitter [(A)dS] vacuum, including extremal black holes that interpolate between this vacuum and (A)dS{sub 2}xS{sup 1}. We also investigate unitarity of linearized NMG in (A)dS vacua. We find unitary theories for some dS vacua, but (bulk) unitarity in AdS implies negative central charge of the dual conformal field theories (CFT), except for {lambda}=3 where the central charge vanishes and the bulk gravitons are replaced by 'massive photons'. A similar phenomenon is found in the massless limit of NMG, for which the linearized equations become equivalent to Maxwell's equations.

  13. Gravity dual of metastable dynamical supersymmetry breaking

    SciTech Connect (OSTI)

    DeWolfe, Oliver [Department of Physics, 390 UCB, University of Colorado, Boulder, Colorado 80309 (United States); Kachru, Shamit; Mulligan, Michael [Department of Physics and SLAC, Stanford University, Stanford, California 94305/94309 (United States)

    2008-03-15T23:59:59.000Z

    Metastable, supersymmetry-breaking configurations can be created in flux geometries by placing antibranes in warped throats. Via gauge/gravity duality, such configurations should have an interpretation as supersymmetry-breaking states in the dual field theory. In this paper, we perturbatively determine the asymptotic supergravity solutions corresponding to D3-brane probes placed at the tip of the cascading warped deformed conifold geometry, which is dual to an SU(N+M)xSU(N) gauge theory. The backreaction of the antibranes has the effect of introducing imaginary anti-self-dual flux, squashing the compact part of the space and forcing the dilaton to run. Using the generalization of holographic renormalization to cascading geometries, we determine the expectation values of operators in the dual field theory in terms of the asymptotic values of the supergravity fields.

  14. Brane f(R) gravity cosmologies

    SciTech Connect (OSTI)

    Balcerzak, Adam; DaPbrowski, Mariusz P. [Institute of Physics, University of Szczecin, Wielkopolska 15, 70-451 Szczecin (Poland)

    2010-06-15T23:59:59.000Z

    By the application of the generalized Israel junction conditions we derive cosmological equations for the fourth-order f(R) brane gravity and study their cosmological solutions. We show that there exists a nonstatic solution which describes a four-dimensional de Sitter (dS{sub 4}) brane embedded in a five-dimensional anti-de Sitter (AdS{sub 5}) bulk for a vanishing Weyl tensor contribution. On the other hand, for the case of a nonvanishing Weyl tensor contribution, there exists a static brane solution only. We claim that in order to get some more general nonstatic f(R) brane configurations, one needs to admit a dynamical matter energy-momentum tensor in the bulk rather than just a bulk cosmological constant.

  15. Bending of light in conformal Weyl gravity

    SciTech Connect (OSTI)

    Sultana, Joseph; Kazanas, Demosthenes [Astrophysics Science Division, NASA/Goddard Space Flight Center, Greenbelt, Maryland 20771 (United States) and Department of Mathematics, University of Malta, Msida (Malta); Astrophysics Science Division, NASA/Goddard Space Flight Center, Greenbelt, Maryland 20771 (United States)

    2010-06-15T23:59:59.000Z

    We reexamine the bending of light issue associated with the metric of the static, spherically symmetric solution of Weyl gravity discovered by Mannheim and Kazanas (1989). To this end we employ the procedure used recently by Rindler and Ishak to obtain the bending angle of light by a centrally concentrated spherically symmetric matter distribution in a Schwarzschild-de Sitter background. In earlier studies the term {gamma}r in the metric led to the paradoxical result of a bending angle proportional to the photon impact parameter, when using the usual formalism appropriate to asymptotically flat space-times. However, employing the approach of light bending of Rindler and Ishak we show that the effects of this term are in fact insignificant, with the discrepancy between the two procedures attributed to the definition of the bending angle between the asymptotically flat and nonflat spaces.

  16. The dynamics of metric-affine gravity

    SciTech Connect (OSTI)

    Vitagliano, Vincenzo, E-mail: vitaglia@sissa.it [SISSA-International School for Advanced Studies, Via Bonomea 265, 34136 Trieste (Italy); INFN, Sez. di Trieste, Via Valerio 2, 34127 Trieste (Italy); Sotiriou, Thomas P., E-mail: T.Sotiriou@damtp.cam.ac.uk [Department of Applied Mathematics and Theoretical Physics, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge, CB3 0WA (United Kingdom); Liberati, Stefano, E-mail: liberati@sissa.it [SISSA-International School for Advanced Studies, Via Bonomea 265, 34136 Trieste (Italy); INFN, Sez. di Trieste, Via Valerio 2, 34127 Trieste (Italy)

    2011-05-15T23:59:59.000Z

    Highlights: > The role and the dynamics of the connection in metric-affine theories is explored. > The most general second order action does not lead to a dynamical connection. > Including higher order invariants excites new degrees of freedom in the connection. > f(R) actions are also discussed and shown to be a non- representative class. - Abstract: Metric-affine theories of gravity provide an interesting alternative to general relativity: in such an approach, the metric and the affine (not necessarily symmetric) connection are independent quantities. Furthermore, the action should include covariant derivatives of the matter fields, with the covariant derivative naturally defined using the independent connection. As a result, in metric-affine theories a direct coupling involving matter and connection is also present. The role and the dynamics of the connection in such theories is explored. We employ power counting in order to construct the action and search for the minimal requirements it should satisfy for the connection to be dynamical. We find that for the most general action containing lower order invariants of the curvature and the torsion the independent connection does not carry any dynamics. It actually reduces to the role of an auxiliary field and can be completely eliminated algebraically in favour of the metric and the matter field, introducing extra interactions with respect to general relativity. However, we also show that including higher order terms in the action radically changes this picture and excites new degrees of freedom in the connection, making it (or parts of it) dynamical. Constructing actions that constitute exceptions to this rule requires significant fine tuned and/or extra a priori constraints on the connection. We also consider f(R) actions as a particular example in order to show that they constitute a distinct class of metric-affine theories with special properties, and as such they cannot be used as representative toy theories to study the properties of metric-affine gravity.

  17. Simulations of Solar System observations in alternative theories of gravity

    E-Print Network [OSTI]

    A. Hees; B. Lamine; S. Reynaud; M. -T. Jaekel; C. Le Poncin-Lafitte; V. Lainey; A. FŁzfa; J. -M. Courty; V. Dehant; P. Wolf

    2013-02-27T23:59:59.000Z

    In this communication, we focus on the possibility to test General Relativity (GR) with radioscience experiments. We present simulations of observables performed in alternative theories of gravity using a software that simulates Range/Doppler signals directly from the space time metric. This software allows one to get the order of magnitude and the signature of the modifications induced by an alternative theory of gravity on radioscience signals. As examples, we present some simulations for the Cassini mission in Post-Einsteinian gravity (PEG) and with Standard Model Extension (SME).

  18. Particles on a Circle in Canonical Lineal Gravity

    E-Print Network [OSTI]

    R. B. Mann

    2001-05-02T23:59:59.000Z

    A description of the canonical formulation of lineal gravity minimally coupled to N point particles in a circular topology is given. The Hamiltonian is found to be equal to the time-rate of change of the extrinsic curvature multiplied by the proper circumference of the circle. Exact solutions for pure gravity and for gravity coupled to a single particle are obtained. The presence of a single particle significantly modifies the spacetime evolution by either slowing down or reversing the cosmological expansion of the circle, depending upon the choice of parameters.

  19. Emergent noncommutative gravity from a consistent deformation of gauge theory

    SciTech Connect (OSTI)

    Cortese, Ignacio; Garcia, J Antonio [Departamento de Fisica de Altas Energias, Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico, Apartado Postal 70-543, Mexico D. F. 04510 (Mexico)

    2010-05-15T23:59:59.000Z

    Starting from a standard noncommutative gauge theory and using the Seiberg-Witten map, we propose a new version of a noncommutative gravity. We use consistent deformation theory starting from a free gauge action and gauging a killing symmetry of the background metric to construct a deformation of the gauge theory that we can relate with gravity. The result of this consistent deformation of the gauge theory is nonpolynomial in A{sub {mu}.} From here we can construct a version of noncommutative gravity that is simpler than previous attempts. Our proposal is consistent and is not plagued with the problems of other approaches like twist symmetries or gauging other groups.

  20. Queer As a Three Pound Note #1†

    E-Print Network [OSTI]

    Multiple Contributors

    1991-01-01T23:59:59.000Z

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