IMAGING WITH DIFFUSE PHOTON DENSITY WAVES Maureen A. O'Leary
IMAGING WITH DIFFUSE PHOTON DENSITY WAVES Maureen A. O'Leary A DISSERTATION in PHYSICS Presented Chairperson #12;COPYRIGHT Maureen Ann O'Leary 1996 #12;DEDICATION This work is dedicated to Mom, Dad, Terry v without David's support. #12;ABSTRACT IMAGING WITH DIFFUSE PHOTON DENSITY WAVES Maureen A. O'Leary
Rebecca Bortz Marguerite Klein
Shen, Jun
and probiotics, to improve the integrity of products used in dietary supplement research. Ms. Klein retires after
PSYCHOLOGY (Ph.D.) Executive Officer: Professor Maureen O'Connor
Dennehy, John
Abramov n Karen Ackroff n Robert R. Alfano n Maureen A. Allwood n Alicia M. Alvero n Asohan Amarasingham n Katz n Irwin Katz n Simon P. Kelly n Benjamin Kest n Ali Khadivi n Susan Klitzman n Alan Kluger n Joan M. Lucariello n Victoria N. Luine n Wendy L. Luttrell n Karen S. Lyness n Jennifer A. Mangels n
The KLEIN -paradox Werner Schosser
in a conventional semiconductor (from [2]) Electronic states in graphene (from [2]) - chemical potential - velocity for nonchiral semiconductor even though the dispersion for both bilayer graphene and conventional semiconductor of Chirality KLEIN Tunneling in Single-layer Graphene KLEIN Tunneling and Conductivity KLEIN Tunneling
Maximal Completion Dominik Klein1
Hirokawa, Nao
Maximal Completion Dominik Klein1 and Nao Hirokawa1 1 School of Information Science Japan Advanced an equational system, completion procedures compute an equivalent and complete (termi- nating and confluent) term rewrite system. We present a very simple and efficient completion procedure, which is based on Max
Graphene tests of Klein phenomena
Stefano De Leo; Pietro Rotelli
2012-02-07T23:59:59.000Z
Graphene is characterized by chiral electronic excitations. As such it provides a perfect testing ground for the production of Klein pairs (electron/holes). If confirmed, the standard results for barrier phenomena must be reconsidered with, as a byproduct, the accumulation within the barrier of holes.
SEA-STARS OF NORTH CAROLINA . By I. E. GRAY,' MAUREEN E. DOWNEY,2 AND M. J. CERAME-VIVAS3
SEA-STARS OF NORTH CAROLINA . By I. E. GRAY,' MAUREEN E. DOWNEY,2 AND M. J. CERAME-VIVAS3 ABSTRACT North Carolina southward, nine range from North Carolina northward, and six occur both north and south of North Carolina. The affinities of the various Although isolated records exist., no previous at- t
Generalized Klein-Nishina formula
Krajewska, K; Kami?ski, J Z
2015-01-01T23:59:59.000Z
The generalized Klein-Nishina formula for Compton scattering of charged particles by a finite train of pulses is derived in the framework of quantum electrodynamics. The formula also applies to classical Thomson scattering provided that frequencies of generated radiation are smaller that the cut-off frequency. The validity of the formula for incident pulses of different durations is illustrated by numerical examples. The positions of the well-resolved Compton peaks, with the clear labeling by integer orders, opens up the possibility of the precise diagnostics of properties of relativistically intense, short laser pulses. This includes their peak intensity, the carrier-envelope phase, and their polarization properties.
Generalized Klein-Nishina formula
K. Krajewska; F. Cajiao Vélez; J. Z. Kami?ski
2015-03-23T23:59:59.000Z
The generalized Klein-Nishina formula for Compton scattering of charged particles by a finite train of pulses is derived in the framework of quantum electrodynamics. The formula also applies to classical Thomson scattering provided that frequencies of generated radiation are smaller that the cut-off frequency. The validity of the formula for incident pulses of different durations is illustrated by numerical examples. The positions of the well-resolved Compton peaks, with the clear labeling by integer orders, opens up the possibility of the precise diagnostics of properties of relativistically intense, short laser pulses. This includes their peak intensity, the carrier-envelope phase, and their polarization properties.
Department of Physics KALUZA-KLEIN THEORY
?umer, Slobodan
#12; #12; #12; Department of Physics Seminar 4 KALUZA-KLEIN THEORY Author: Anze Zaloznik to find the theory which would unify all the known interactions under a fundamental law for a long time. One of the first attempts was the Kaluza-Klein theory which uses the postu- lation of extra space
QFT Treatment of the Klein Paradox
C. Xu; Y. J. Li
2015-03-31T23:59:59.000Z
It is well known that, Klein paradox is one of the most exotic and counterintuitive consequences of quantum theory. Nevertheless, many discussions about the Klein paradox are based upon single-particle Dirac equation in quantum mechanics rather than quantum field method. By using the path integral formalism, we evaluate the reflection and transmission coefficients up to the lowest order for the electron scattering by the finite square barrier potential. Within the context of assuming the step potential is the limiting case of the finite square barrier potential, we explain the Klein paradox that is caused by the ill-definition of the step potential.
Evidence Against Klein Paradox in Graphene
Daniela Dragoman
2008-02-23T23:59:59.000Z
It is demonstrated that both transmission and reflection coefficients associated to the Klein paradox at a step barrier are positive and less than unity, so that the particle-antiparticle pair creation mechanism commonly linked to this phenomenon is not necessary. Because graphene is a solid-state testing ground for quantum electrodynamics phenomena involving massless Dirac fermions we suggest that the transport characteristic through a p-n graphene junction can decide between the results obtained in this paper and the common Klein paradox theory, which imply negative transmission and higher-than-unity reflection coefficients. Recent experimental evidence supports our findings.
Will robots see? Stanley A. Klein
Klein, Stanley
Will robots see? Stanley A. Klein Will robots ever really see? Imagine a robot 10,000 years in the future. At that time we should finally understand the visual system and be able to build robots whose visual performance surpasses humans'. We will then ask: when a robot claims to be seeing, are its
Inflationary universe in Kaluza-Klein theories
A. S. Majumdar
1999-05-13T23:59:59.000Z
We describe extended inflation and its typical problems. We then briefly review essential features of Kaluza-Klein theory, and show that it leads to a scenario of inflationary cosmology in four dimensions. The problem of stable compactification of extra spatial dimensions is discussed. The requirements for successful extended inflation lead to constraints on the parameters of higher dimensional models.
Clerc, Maureen
THE FAST MULTIPOLE METHOD FOR THE DIRECT E/MEG PROBLEM Maureen Clerc 1;2 , Renaud Keriven 1 directly. We propose to accelerate the computations via the fast multipole method. This method approximates the electromagnetic interaction between surface elements by performing multipole expanÂ sions at a coarse resolution
Tracer Testing (Klein, 2007) | Open Energy Information
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Dirac equation in the Nonsymmetric Kaluza-Klein Theory
Kalinowski, M W
2015-01-01T23:59:59.000Z
We rederive Dirac equation in the Nonsymmetric Kaluza-Klein Theory gettig an electric dipole moment of fermion and CP violation.
Dirac equation in the Nonsymmetric Kaluza-Klein Theory
M. W. Kalinowski
2015-07-08T23:59:59.000Z
We rederive Dirac equation in the Nonsymmetric Kaluza-Klein Theory gettig an electric dipole moment of fermion and CP violation.
Klein backscattering and Fabry-Perot resonances in graphene
Gabrieli, John
Klein backscattering and Fabry- Perot resonances in graphene p-n-p junctions Leonid Levitov gap = hvF/width Coulomb blockade in graphene Geim, Novoselov; Ensslin group #12;Graphene p
Kaluza-Klein relics from warped reheating
Berndsen, Aaron; Cline, James M.; Stoica, Horace [Physics Department, McGill University, 3600 University Street, Montreal, Quebec, H3A 2T8 (Canada); Blackett Laboratory, Imperial College, London SW7 2AZ (United Kingdom)
2008-06-15T23:59:59.000Z
It has been suggested that after brane-antibrane inflation in a Klebanov-Strassler (KS) warped throat, metastable Kaluza-Klein excitations can be formed due to nearly-conserved angular momenta along isometric directions in the throat. If sufficiently long lived, these relics could conflict with big bang nucleosynthesis or baryogenesis by dominating the energy density of the Universe. We make a detailed estimate of the decay rate of such relics using the low-energy effective action of type IIB string theory compactified on the throat geometry, with attention to powers of the warp factor. We find that it is necessary to turn on supersymmetry (SUSY)-breaking deformations of the KS background in order to ensure that the most dangerous relics will decay fast enough. The decay rate is found to be much larger than the naive guess based on the dimension of the operators which break the angular isometries of the throat. For an inflationary warp factor of order w{approx}10{sup -4}, we obtain the bound M{sub 3/2} > or approx. 10{sup 9} GeV on the scale of SUSY breaking to avoid cosmological problems from the relics, which is satisfied in the Kachru, Kallosh, Linde, and Trivedi construction assumed to stabilize the compactification. Given the requirement that the relics decay before nucleosynthesis or baryogenesis, we place bounds on the mass of the relic as a function of the warp factor in the throat for more general warped backgrounds.
Extra force in Kaluza-Klein gravity theory
W. B. Belayev
2007-06-18T23:59:59.000Z
In induced matter Kaluza-Klein gravity theory the solution of the dynamics equations for the test particle on null path leads to additional force in four-dimensional space-time. We find such force from five-dimensional geodesic line equations and apply this approach to analysis of the asymmetrically warped space-time.
Exercice session Cargse, October 2008 Klein tunneling in graphene
Paris-Sud 11, Université de
Exercice session Cargèse, October 2008 Klein tunneling in graphene Pierre Allain and Jean-Noël Fuchs 1 Introduction : plane wave The goal is to compute the probability transmission T of a graphene 1 = n2 sin 2 for an electron in graphene and show that the optical index n is proportional
THE BLUE SKY CATASTROPHE ON THE KLEIN BOTTLE
Zhang, Meirong
THE BLUE SKY CATASTROPHE ON THE KLEIN BOTTLE Weigu Li and Meirong Zhang Department of Mathematics orbit, the so-called blue sky catastrophe. Let's begin with the definition. Definition 1 One-parameter family of vector fields on a compact manifold has a blue sky catastrophe if for all parameter values from
Charge confinement and Klein tunneling from doping graphene
C. Popovici; O. Oliveira; W. de Paula; T. Frederico
2012-02-14T23:59:59.000Z
In the present work, we investigate how structural defects in graphene can change its transport properties. In particular, we show that breaking of the sublattice symmetry in a graphene monolayer overcomes the Klein effect, leading to confined states of massless Dirac fermions. Experimentally, this corresponds to chemical bonding of foreign atoms to carbon atoms, which attach themselves to preferential positions on one of the two sublattices. In addition, we consider the scattering off a tensor barrier, which describes the rotation of the honeycomb cells of a given region around an axis perpendicular to the graphene layer. We demonstrate that in this case the intervalley mixing between the Dirac points emerges, and that Klein tunneling occurs.
Trace Element Analysis (Klein, 2007) | Open Energy Information
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 Data Center Home Page onsource History View New PagessourceRavenandEconomiesEnergyTitle 29Trace Element Analysis (Klein, 2007) Jump to:
Cosmological models in the nonsymmetric Kaluza-Klein Theory
M. W. Kalinowski
2003-12-30T23:59:59.000Z
We consider a dynamics of Higgs' field in the framework of cosmological models involving the scalar field from Nonsymmetric Kaluza-Klein (Jordan-Thiry) Theory. The field plays here a role of a quintessence field. We consider phase transition in cosmological models of the second and of the first order due to evolution of Higgs' field. We developed inflationary models including calculation of an amount of inflation. We match some cosmological models, calculating a Hubble parameter and an age of the Universe.
1-D Dirac Equation, Klein Paradox and Graphene
S. P. Bowen
2008-07-23T23:59:59.000Z
Solutions of the one dimensional Dirac equation with piece-wise constant potentials are presented using standard methods. These solutions show that the Klein Paradox is non-existent and represents a failure to correctly match solutions across a step potential. Consequences of this exact solution are studied for the step potential and a square barrier. Characteristics of massless Dirac states and the momentum linear band energies for Graphene are shown to have quite different current and momentum properties.
NREL: Energy Analysis - Maureen Hand
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:1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:5 TablesExports(Journalhttp://www.fnal.gov/directorate/nalcal/nalcal02_07_05_files/nalcal.gif DirectorateWhat IsPowerJon Weers PhotoMarket
Snohomish PUD Steve Klein CEO/General Manager
Broader source: Energy.gov (indexed) [DOE]
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:1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:5 TablesExports to3,1,50022,3,,0,,6,1,Separation 23 362Transmission:portion5When purchasingAccelerate Deployment2011 I U.S.SmartSnohomish PUD Steve Klein
Kaluza-Klein description of geometric phases in graphene
K. Bakke; A. Yu. Petrov; C. Furtado
2012-09-03T23:59:59.000Z
In this paper, we use the Kaluza-Klein approach to describe topological defects in a graphene layer. Using this approach, we propose a geometric model allowing to discuss the quantum flux in $K$-spin subspace. Within this model, the graphene layer with a topological defect is described by a four-dimensional metric, where the deformation produced by the topological defect is introduced via the three-dimensional part of metric tensor, while an Abelian gauge field is introduced via an extra dimension. We use this new geometric model to discuss the arising of topological quantum phases in a graphene layer with a topological defect.
Kaluza-Klein dark matter and galactic antiprotons (Journal Article) |
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:1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:5 TablesExports to3,1,50022,3,,0,,6,1,SeparationConnect Journal Article:Using Tworesonance (Journal Article) |JournalSciTech Connect Kaluza-Klein
The modified Klein Gordon equation for neolithic population migration
M. Pelc; J. Marciak-Kozlowska; M. Kozlowski
2007-03-11T23:59:59.000Z
In this paper the model for the neolithic migration in Europe is developed. The new migration equation, the modified Klein Gordon equation is formulated and solved. It is shown that the migration process can be described as the hyperbolic diffusion with constant speed. In comparison to the existing models based on the generalization of the Fisher approach the present model describes the migration as the transport process with memory and offers the possibility to recover the initial state of migration which is the wave motion with finite velocity.
Dynamics of Matter in a Compactified Kaluza-Klein Model
Valentino Lacquaniti; Giovanni Montani
2009-02-10T23:59:59.000Z
A longstanding problem in Kaluza-Klein models is the description of matter dynamics. Within the 5D model, the dimensional reduction of the geodesic motion for a 5D free test particle formally restores electrodynamics, but the reduced 4D particle shows a charge-mass ratio that is upper bounded, such that it cannot fit to any kind of elementary particle. At the same time, from the quantum dynamics viewpoint, there is the problem of the huge massive modes generation. We present a criticism against the 5D geodesic approach and face the hypothesis that in Kaluza-Klein space the geodesic motion does not deal with the real dynamics of test particle. We propose a new approach: starting from the conservation equation for the 5D matter tensor, within the Papapetrou multipole expansion, we prove that the 5D dynamical equation differs from the 5D geodesic one. Our new equation provides right coupling terms without bounding and in such a scheme the tower of massive modes is removed.
Scattering of Klein–Gordon particles by a Kink-like potential
Hassanabadi, H., E-mail: h.hasanabadi@shahroodut.ac.ir [Department of Basic Sciences, Shahrood Branch, Islamic Azad University, Shahrood (Iran, Islamic Republic of); Lu, Liangliang [National Laboratory of Solid State Microstructures and School of Physics, Nanjing University, Nanjing, 210093 (China)] [National Laboratory of Solid State Microstructures and School of Physics, Nanjing University, Nanjing, 210093 (China); Maghsoodi, E. [Department of Basic Sciences, Shahrood Branch, Islamic Azad University, Shahrood (Iran, Islamic Republic of)] [Department of Basic Sciences, Shahrood Branch, Islamic Azad University, Shahrood (Iran, Islamic Republic of); Liu, Guanghui [State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-sen University, Guangzhou 510275 (China)] [State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-sen University, Guangzhou 510275 (China); Zarrinkamar, S. [Department of Basic Sciences, Garmsar Branch, Islamic Azad University, Garmsar (Iran, Islamic Republic of)] [Department of Basic Sciences, Garmsar Branch, Islamic Azad University, Garmsar (Iran, Islamic Republic of)
2014-03-15T23:59:59.000Z
The Klein–Gordon equation for the non-minimal vector and a scalar Kink-like potential is solved in terms of the hypergeometric functions. The scattering problem, i.e. the transmission and reflection coefficients, is studied as well. -- Highlights: •The Klein–Gordon equation for the non-minimal vector and a scalar Kink-like potential is solved. •We have calculated the corresponding transmission and reflection coefficients. •We discussed the behavior of the reflection and transmission coefficients vs. energy.
Finite Temperature Casimir Effect in Kaluza-Klein Spacetime
L. P. Teo
2009-01-15T23:59:59.000Z
In this article, we consider the finite temperature Casimir effect in Kaluza-Klein spacetime due the the vacuum fluctuation of massless scalar field with Dirichlet boundary conditions. We consider the general case where the extra dimensions (internal space) can be any compact connected manifold or orbifold without boundaries. Using piston analysis, we show that the Casimir force is always attractive at any temperature, regardless of the geometry of the internal space. Moreover, the magnitude of the Casimir force increases as the size of the internal space increases and it reduces to the Casimir force in (3+1)-dimensional Minskowski spacetime when the size of the internal space shrinks to zero. In the other extreme where the internal space is large, the Casimir force can increase beyond all bound. Asymptotic behaviors of the Casimir force in the low and high temperature regimes are derived and it is observed that the magnitude of the Casimir force grows linearly with temperature in the high temperature regime.
Kaluza-Klein Contamination in Fermi Accelerated Environments
Cong-Xin Qiu
2008-08-09T23:59:59.000Z
Astrophysical constraints of new physics are often limited to weakly interacting light particles, such as axions, the Kaluza-Klein (KK) gravitons from the ADD model, sterile neutrinos and unparticles. We discuss the possibility for an astrophysical scenario to (dis)confirm new physics for heavy particles beyond TeV energy scale. In our scenario, the KK protons (the KK excited quarks/gluons within protons) within the framework of universal extra dimensions (UEDs), are produced by high energy p + p collisions in Fermi accelerated environments, with protonic isotropic spectrum d N / d E \\propto E^-2 up to at least 10^18 eV. Thus, because they are also electrically charged, they should be re-accelerated by mechanism similar to normal protons. The KK states (no matter whether they have already decayed to the lightest KK particle or not) should contaminate 10^-5 to 10^-2 of cosmic-ray events for some fixed energy E (within some suitable assumptions). Hence, if we have techniques to identify them from air shower data, we can constrain UEDs scenario. Our method is an "existence proof" that we can constrain new physics beyond TeV scale or much higher by classical astrophysical scenarios, which can also be generalized to supersymmetric models, the bulk Standard Model fields within the RS model, and the endlessly emerging new models. Moreover, it can exploit domains which have no possibility to be studied in terrestrial experiments.
Klein tunneling and supercollimation of pseudospin-1 photons
Fang, A; Louie, Steven G; Chan, C T
2015-01-01T23:59:59.000Z
Pseudospin plays a central role in many novel physical properties of graphene and other artificial systems which have pseudospins of 1/2. Here we show that in certain photonic crystals (PCs) exhibiting conical dispersions at k = 0, the eigenmodes near the "Dirac-like point" can be described by an effective spin-orbit Hamiltonian with a pseudospin of 1, treating wave propagations in the upper cone, the lower cone and a flat band (corresponding to zero refractive index) within a unified framework. The 3-component spinor gives rise to boundary conditions distinct from those of pseudospin-1/2, leading to new wave transport behaviors as manifested in Klein tunneling and supercollimation. For example, collimation can be realized more easily with pseudospin-1 than pseudospin-1/2. The special wave scattering properties of pseudospin-1 photons, coupled with the discovery that the effective photonic "potential" can be varied by a simple change of length scale, may offer new ways to control photon transport.
Wind ringing of the ocean in presence of mesoscale eddies P. Klein and G. Lapeyre
Lapeyre, Guillaume
Wind ringing of the ocean in presence of mesoscale eddies P. Klein and G. Lapeyre Laboratoire de scales related to oceanic mesoscale eddies. Results show that a turbulent eddy field does not affect Oceanography: Physical: Eddies and mesoscale processes; 4572 Oceanography: Physical: Upper ocean processes
EIGENVALUES OF SATURATED HYDROCARBONS D. J. KLEIN AND C. E. LARSON
Larson, Craig E.
EIGENVALUES OF SATURATED HYDROCARBONS D. J. KLEIN AND C. E. LARSON Abstract. A simplified HÂ¨uckel-type molecular-orbital (MO) model for the valence electrons of saturated hydrocarbons is proposed and half negative. Keywords: saturated hydrocarbons, alkanes, stellation, para-line graph. 1. Saturated
Corneal Topography: A review, new ANSI standards and problems to solve Stanley A. Klein
Klein, Stanley
Corneal Topography: A review, new ANSI standards and problems to solve Stanley A. Klein School based instruments is presented. 2. a summary of and commentary on the newly issued ANSI standards topographers" by the ANSI standard), has the advantage of being able to measure corneal thickness as well
Thesaurus-based Retrieval of Case Law Michel C.A. KLEIN a
van Harmelen, Frank
Thesaurus-based Retrieval of Case Law Michel C.A. KLEIN a , Wouter VAN STEENBERGEN b , Elisabeth M within the domain of tort law from a repository of 68.000 court verdicts. We apply a thesaurus interpretation. Keywords. retrieval, case law, ontology, thesaurus 1. Introduction The judiciary is faced
Clara Rojas
2014-09-18T23:59:59.000Z
We solve the Klein-Gordon equation for a step potential with hyperbolic tangent potential. The scattering solutions are derived in terms of hypergeometric functions. The reflection coefficient R and transmission coefficient T are calculated, we observed superradiance and transmission resonances.
The statistical properties of Klein-Gordon oscillator in noncommutative space
Hassanabadi, H., E-mail: h.hasanabadi@shahroodut.ac.ir; Hosseini, S. S. [Department of Basic Sciences, Shahrood Branch, Islamic Azad University, Shahrood (Iran, Islamic Republic of)] [Department of Basic Sciences, Shahrood Branch, Islamic Azad University, Shahrood (Iran, Islamic Republic of); Boumali, A. [Laboratoire de Physique Appliquée et Théorique, Université de Tébessa, 12000 W. Tébessa (Algeria)] [Laboratoire de Physique Appliquée et Théorique, Université de Tébessa, 12000 W. Tébessa (Algeria); Zarrinkamar, S. [Department of Basic Sciences, Garmsar Branch, Islamic Azad University, Garmsar (Iran, Islamic Republic of)] [Department of Basic Sciences, Garmsar Branch, Islamic Azad University, Garmsar (Iran, Islamic Republic of)
2014-03-15T23:59:59.000Z
We study the relativistic spin-zero bosons influenced by the Klein-Gordon oscillator and an external magnetic field in noncommutative formulation. The problem is considered in two dimensions and is solved in an exact analytical manner. Having found the spectrum of the system, the statistical properties of an N-boson system are reported.
Single field inflationary models with non-compact Kaluza-Klein theory
Diego S. Ledesma; Mauricio Bellini
2003-12-04T23:59:59.000Z
We discuss a semiclassical treatment to inflationary models from Kaluza-Klein theory without the cylinder condition. We conclude that the evolution of the early universe could be described by a geodesic trayectory of a cosmological 5D metric here proposed, so that the effective 4D FRW background metric should be a hypersurface on a constant fifth dimension.
Kovalyov, Mikhail [Department of Mathematics, University of Alberta, Edmonton, Alberta, T6G 2G1 (Canada)
2010-06-15T23:59:59.000Z
In this article the sets of solutions of the sine-Gordon equation and its linearization the Klein-Gordon equation are discussed and compared. It is shown that the set of solutions of the sine-Gordon equation possesses a richer structure which partly disappears during linearization. Just like the solutions of the Klein-Gordon equation satisfy the linear superposition principle, the solutions of the sine-Gordon equation satisfy a nonlinear superposition principle.
F-theory and Neutrinos: Kaluza-Klein Dilution of Flavor Hierarchy
Seo, Jihye [Jefferson Physical Laboratory, Harvard University, Cambridge, MA 02138 (United States)
2010-02-10T23:59:59.000Z
We present a Majorana neutrino scenario in a F-theory SU(5) GUT model, which is recently proposed in [1]. The mass scale of the neutrinos arises from integrating out heavy Kaluza-Klein modes on the right-handed neutrinos. The participation of non-holomorphic Kaluza-Klein mode wave functions dilutes the mass hierarchy in comparison to the quark and charged lepton sectors, in agreement with experimentally measured mass splittings. The neutrinos are predicted to exhibit a 'normal' mass hierarchy, with masses (m{sub 3}, m{sub 2}, m{sub 1})approx.05x(1,alpha{sub GUT}{sup 1/2},alpha{sub GUT}) eV. The neutrino mixing matrix exhibits a mild hierarchical structure with theta{sub 13}approxalpha{sub GUT}{sup 1/2}approx0.2. We also predict mass measurements in single and double beta decay experiments.
On the solution of the Heaviside - Klein - Gordon thermal equation for heat transport in graphene
Magdalena Pelc
2007-11-26T23:59:59.000Z
We report studies of the solution of the Heaviside - Klein - Gordon thermal equation. As the result it is shown that the solution consists of two components: the fast thermal wave and slow diffusion for very large (compared to relaxation time) time period. We argue that the fast thermal wave can be recognized as the indication of the ballistic heat transport. As an example we consider the ballistic heat transport in graphene.
General Rotating Charged Kaluza-Klein AdS Black Holes in Higher Dimensions
Shuang-Qing Wu
2011-08-21T23:59:59.000Z
I construct exact solutions for general nonextremal rotating, charged Kaluza-Klein black holes with a cosmological constant and with arbitrary angular momenta in all higher dimensions. I then investigate their thermodynamics and find their generalizations with the NUT charges. The metrics are given in both Boyer-Lindquist coordinates and a form very similar to the famous Kerr-Schild ansatz, which highlights its potential application to include multiple electric charges into solutions yet to be found in gauged supergravity. It is also observed that the metric ansatz in $D = 4$ dimensions is similar to those previously suggested by Yilmaz and later by Bekenstein.
Mass and Free energy in Thermodynamics of Squashed Kaluza-Klein Black Holes
Yasunari Kurita; Hideki Ishihara
2007-08-01T23:59:59.000Z
The Abbott-Deser mass, the Hamiltonian and the Komar mass of the 5-dimensional Kaluza-Klein black hole with squashed horizons take different values. Introducing a new couple of thermodynamic variables for the Komar mass, we show that each mass can be interpreted as a thermodynamic potential with its own natural variables, i.e. all masses are related to each other by the Legendre transformations. It is found that the new variables and the gravitational tension represent the squashing of the outer horizon.
Noncommutative Geometry and a Discretized Version of Kaluza-Klein Theory with a Finite Field Content
Nguyen Ai Viet; Kameshwar C. Wali
1994-12-27T23:59:59.000Z
We consider a four-dimensional space-time supplemented by two discrete points assigned to a $Z_2$ algebraic structure and develop the formalism of noncommutative geometry. By setting up a generalised vielbein, we study the metric structure. Metric compatible torsion free connection defines a unique finite field content in the model and leads to a discretized version of Kaluza-Klein theory. We study some special cases of this model that illustrate the rich and complex structure with massive modes and the possible presence of a cosmological constant.
Quantification of electrical charges in Kaluza Klein theory without strings of Dirac
Paulo da Costa Moreira
2006-04-19T23:59:59.000Z
It is proposed a formalism of quantification of the electric charges in the Kaluza Klein theory of five dimensions and a explanation of the cause of the variation of the electromagnetic fine-structure constant in cosmological times.There is a formalism that eliminates the problem that impeached the KK theory to complete the unification of the electromagnetic and the gravitational fields. The complete unification of these two fields is obtained. The radius of compactation is determined as 70,238 lengths of Planck.
On the Klein-Gordon equation near a De Sitter brane in an Anti-de Sitter bulk
Alain Bachelot
2014-06-29T23:59:59.000Z
In this paper we investigate the Klein-Gordon equation in the past causal domain of a De Sitter brane imbedded in a Anti-de Sitter bulk. We solve the global mixed hyperbolic problem. We prove that any finite energy solution can be expressed as a Kaluza-Klein tower that is a superposition of free fields in the Steady State Universe, of which we study the asymptotic behaviours. We show that the leading term of a gravitational fluctuation is a massless graviton, i.e. the De Sitter brane is linearly stable.
An Improvement to a Berezin-Li-Yau type inequality for the Klein-Gordon Operator
Yolcu, Selma Yildirim
2009-01-01T23:59:59.000Z
In this article we improve a lower bound for $\\sum_{j=1}^k\\beta_j$ (a Berezin-Li-Yau type inequality) in [E. M. Harrell II and S. Yildirim Yolcu, Eigenvalue inequalities for Klein-Gordon Operators, J. Funct. Analysis, 256(12) (2009) 3977-3995]. Here $\\beta_j$ denotes the $j$th eigenvalue of the Klein Gordon Hamiltonian $H_{0,\\Omega}=|p|$ when restricted to a bounded set $\\Omega\\subset {\\mathbb R}^n$. $H_{0,\\Omega}$ can also be described as the generator of the Cauchy stochastic process with a killing condition on $\\partial \\Omega$. (cf. [R. Banuelos, T. Kulczycki, Eigenvalue gaps for the Cauchy process and a Poincare inequality, J. Funct. Anal. 211 (2) (2004) 355-423]; [R. Banuelos, T. Kulczycki, The Cauchy process and the Steklov problem, J. Funct. Anal. 234 (2006) 199-225].) To do this, we adapt the proof of Melas ([ A. D. Melas, A lower bound for sums of eigenvalues of the Laplacian, Proceedings of the American Mathematical Society, 131(2) (2002) 631-636]), who improved the estimate for the bound of $\\sum_...
Steven Kenneth Kauffmann
2013-09-29T23:59:59.000Z
The historical Klein-Gordon transformation of complex-valued first-order in time Schroedinger equations iterates these in a naively straightforward way which changes them into complex-valued second-order in time equations that have a plethora of extraneous solutions -- the transformation is an operator-calculus analogue of the squaring of both sides of an algebraic equation. The real and imaginary parts of a Schroedinger equation, however, are well known to be precisely the dynamical equation pair of the real-valued classical Hamiltonian functional which is numerically equal to the expectation value of that Schroedinger equation's Hermitian Hamiltonian operator. The purely real-valued second-order in time Euler-Lagrange equation of the corresponding classical Lagrangian functional is also isomorphic to that Schroedinger equation, and for symmetric Hamiltonians has exactly the same formal appearance as the corresponding naive complex-valued Klein-Gordon equation, but none of the latter's extraneous solutions. These quantum Schroedinger-equation isomorphisms to classical Euler-Lagrange equations are the technical manifestation of a key theoretical aspect of the principle of complementarity, one which is elegantly illustrated by the isomorphic free-photon wave-function complement to the vector potential of source-free classical electrodynamics.
Klein, Stanley
Wide angle cornea-sclera (ocular) topography Stanley A. Klein, John Corzine, School of Optometry is noisier, it is the only topographer available able to measure scleral topography that is critically OCULAR TOPOGRAPHY During the period from 1992 to 1999 corneal topography became a major focus for cornea
Eamonn Long; David Stuart
2009-05-07T23:59:59.000Z
We consider the nonlinear Klein Gordon Maxwell system on four dimensional Minkowski space-time. For appropriate nonlinearities the system admits soliton solutions which are gauge invariant generalizations of the non-topological solitons introduced and studied by T.D. Lee and collaborators for pure complex scalar fields. We develop a rigorous dynamical perturbation theory for these solitons in the small e limit, where e is the electromagnetic coupling constant. The main theorems assert the long time stability of the solitons with respect to perturbation by an external electromagnetic field produced by the background current, and compute their effective dynamics to O(e). The effective dynamical equation is the equation of motion for a relativistic particle acted on by the Lorentz force law familiar from classical electrodynamics.
Prasanta Kumar Das; V H Satheeshkumar; P. K. Suresh
2008-08-20T23:59:59.000Z
In large extra dimensional Kaluza-Klein (KK) scenario, where the usual Standard Model (SM) matter is confined to a 3+1-dimensional hypersurface called the 3-brane and gravity can propagate to the bulk (D=4+d, d being the number of extra spatial dimensions), the light graviton KK modes can be produced inside the supernova core due to the usual nucleon-nucleon bremstrahlung, electron-positron and photon-photon annihilations. This photon inside the supernova becomes plasmon due to the plasma effect. In this paper, we study the energy-loss rate of SN 1987A due to the KK gravitons produced from the plasmon-plasmon annihilation. We find that the SN 1987A cooling rate leads to the conservative bound $M\\_D$ > 22.9 TeV and 1.38 TeV for the case of two and three space-like extra dimensions.
The 3-dimensional Einstein-Klein-Gordon system in characteristic numerical relativity
W. Barreto; A. Da Silva; R. Gomez; L. Lehner; L. Rosales; J. Winicour
2004-12-14T23:59:59.000Z
We incorporate a massless scalar field into a 3-dimensional code for the characteristic evolution of the gravitational field. The extended 3-dimensional code for the Einstein--Klein--Gordon system is calibrated to be second order convergent. It provides an accurate calculation of the gravitational and scalar radiation at infinity. As an application, we simulate the fully nonlinear evolution of an asymmetric scalar pulse of ingoing radiation propagating toward an interior Schwarzschild black hole and compute the backscattered scalar and gravitational outgoing radiation patterns. The amplitudes of the scalar and gravitational outgoing radiation modes exhibit the predicted power law scaling with respect to the amplitude of the initial data. For the scattering of an axisymmetric scalar field, the final ring down matches the complex frequency calculated perturbatively for the $\\ell=2$ quasinormal mode.
6-dimensional Kaluza-Klein Theory for Basic Quantum Particles and Electron-Photon Interaction
Xiaodong Chen
2005-01-26T23:59:59.000Z
By extending original Kaluza-Klein theory to 6-dimension, the basic quantum field equations for 0-spin particle, 1-spin particle and 1/2 spin particle with mass >0 are directly derived from 6-dimensional Einstein equations. It shows that the current quantum field equations of basic particles become pure geometry properties under 6-dimension time-space. The field equations of electron and photon can be unified in one 6-dimensional extended Maxwell equation. The equations containing interactions between electron and photon will be derived from Einstein equation under 6-dimension time-space. It shows that the interactions in QED can be considered as the effect of local geometry curvature changing instead of exchange virtual photons.
Kaluza-Klein bubble like structure and celestial sphere in inflationary universe
Tetsuya Shiromizu; Shinya Tomizawa; Yuki Uchida; Shinji Mukohyama
2005-06-04T23:59:59.000Z
We consider five dimensional deSitter spacetimes with a deficit angle due to the presence of a closed 2-brane and identify one dimension as an extra dimension. From the four dimensional viewpoint we can see that the spacetime has a structure similar to a Kaluza-Klein bubble of nothing, that is, four dimensional spacetime ends at the 2-brane. Since a spatial section of the full deSitter spacetime has the topology of a sphere, the boundary surface surrounds the remaining four dimensional spacetime, and can be considered as the celestial sphere. After the spacetime is created from nothing via an instanton which we describe, some four dimensional observers in it see the celestial sphere falling down, and will be in contact with a 2-brane attached on it.
Non-equilibrium steady states in the Klein-Gordon theory
Benjamin Doyon; Andrew Lucas; Koenraad Schalm; M. J. Bhaseen
2014-09-23T23:59:59.000Z
We construct non-equilibrium steady states in the Klein-Gordon theory in arbitrary space dimension $d$ following a local quench. We consider the approach where two independently thermalized semi-infinite systems, with temperatures $T_{\\rm L}$ and $T_{\\rm R}$, are connected along a $d-1$-dimensional hypersurface. A current-carrying steady state, described by thermally distributed modes with temperatures $T_{\\rm L}$ and $T_{\\rm R}$ for left and right-moving modes, respectively, emerges at late times. The non-equilibrium density matrix is the exponential of a non-local conserved charge. We obtain exact results for the average energy current and the complete distribution of energy current fluctuations. The latter shows that the long-time energy transfer can be described by a continuum of independent Poisson processes, for which we provide the exact weights. We further describe the full time evolution of local observables following the quench. Averages of generic local observables, including the stress-energy tensor, approach the steady state with a power-law in time, where the exponent depends on the initial conditions at the connection hypersurface. We describe boundary conditions and special operators for which the steady state is reached instantaneously on the connection hypersurface. A semiclassical analysis of freely propagating modes yields the average energy current at large distances and late times. We conclude by comparing and contrasting our findings with results for interacting theories and provide an estimate for the timescale governing the crossover to hydrodynamics. As a modification of our Klein-Gordon analysis we also include exact results for free Dirac fermions.
Ergodicity of the Martyna-Klein-Tuckerman Thermostat and the 2014 Snook Prize
William Graham Hoover; Carol Griswold Hoover
2015-01-28T23:59:59.000Z
Nos\\'e and Hoover's 1984 work showed that although Nos\\'e and Nos\\'e-Hoover dynamics were both consistent with Gibbs' canonical distribution neither dynamics, when applied to the harmonic oscillator, provided Gibbs' Gaussian distribution. Further investigations indicated that two independent thermostat variables are necessary, and often sufficient, to generate Gibbs' canonical distribution for an oscillator. Three successful time-reversible and deterministic sets of two-thermostat motion equations were developed in the 1990s. We analyze one of them here. It was developed by Martyna, Klein, and Tuckerman in 1992. Its ergodicity was called into question by Patra and Bhattacharya in 2014. This question became the subject of the 2014 Snook Prize. Here we summarize the previous work on this problem and elucidate new details of the chaotic dynamics in the neighborhood of the two fixed points. We apply six separate tests for ergodicity and conclude that the MKT equations are fully compatible with all of them, in consonance with our recent work with Clint Sprott and Puneet Patra.
Massive Klein--Gordon equation from a BEC-based analogue spacetime
Matt Visser; Silke Weinfurtner
2005-06-08T23:59:59.000Z
We extend the "analogue spacetime" programme by investigating a condensed-matter system that is in principle capable of simulating the massive Klein--Gordon equation in curved spacetime. Since many elementary particles have mass, this is an essential step in building realistic analogue models, and a first step towards simulating quantum gravity phenomenology. Specifically, we consider the class of two-component BECs subject to laser-induced transitions between the components. This system exhibits a complicated spectrum of normal mode excitations, which can be viewed as two interacting phonon modes that exhibit the phenomenon of "refringence". We study the conditions required to make these two phonon modes decouple. Once decoupled, the two distinct phonons generically couple to distinct effective spacetimes, representing a bi-metric model, with one of the modes acquiring a mass. In the eikonal limit the massive mode exhibits the dispersion relation of a massive relativistic particle: omega = sqrt[omega_0^2 + c^2 k^2], plus curved-space modifications. Furthermore, it is possible to tune the system so that both modes can be arranged to travel at the same speed, in which case the two phonon excitations couple to the same effective metric. From the analogue spacetime perspective this situation corresponds to the Einstein equivalence principle being satisfied.
Basile Gallet; Sergey Nazarenko; Bérengère Dubrulle
2015-04-21T23:59:59.000Z
In field theory, particles are waves or excitations that propagate on the fundamental state. In experiments or cosmological models one typically wants to compute the out-of-equilibrium evolution of a given initial distribution of such waves. Wave Turbulence deals with out-of-equilibrium ensembles of weakly nonlinear waves, and is therefore well-suited to address this problem. As an example, we consider the complex Klein-Gordon equation with a Mexican-hat potential. This simple equation displays two kinds of excitations around the fundamental state: massive particles and massless Goldstone bosons. The former are waves with a nonzero frequency for vanishing wavenumber, whereas the latter obey an acoustic dispersion relation. Using wave turbulence theory, we derive wave kinetic equations that govern the coupled evolution of the spectra of massive and massless waves. We first consider the thermodynamic solutions to these equations and study the wave condensation transition, which is the classical equivalent of Bose-Einstein condensation. We then focus on nonlocal interactions in wavenumber space: we study the decay of an ensemble massive particles into massless ones. Under rather general conditions, these massless particles accumulate at low wavenumber. We study the dynamics of waves coexisting with such a strong condensate, and we compute rigorously a nonlocal Kolmogorov-Zakharov solution, where particles are transferred non-locally to the condensate, while energy cascades towards large wave numbers through local interactions. This nonlocal cascading state constitute the intermediate asymptotics between the initial distribution of waves and the thermodynamic state reached in the long-time limit.
Rossi, Enrico
Signatures of Klein tunneling in disordered graphene p-n-p junctions E. Rossi,1 J. H. Bardarson,2 P application we study the disorder dependence of Klein tunneling dominated transport in p-n-p junctions. Both of the resistance oscillations in a disor- dered graphene p-n-p junction which incorporates both realistic Coulomb
Prabir Rudra
2012-11-09T23:59:59.000Z
In this work we have investigated the emergent scenario of the universe described by Loop quantum cosmology model, DGP brane model and Kaluza-Klein cosmology. Scalar field along with barotropic fluid as normal matter is considered as the matter content of the universe. In Loop quantum cosmology it is found that the emergent scenario is realized with the imposition of some conditions on the value of the density of normal matter in case of normal and phantom scalar field. This is a surprising result indeed considering the fact that scalar field is the dominating matter component. In case of Tachyonic field, emergent scenario is realized with some constraints on the value of $\\rho_{1}$ for both normal and phantom tachyon. In case of DGP brane-world realization of an emergent scenario is possible almost unconditionally for normal and phantom fields. Plots and table have been generated to testify this fact. In case of tachyonic field emergent scenario is realized with some constraints on $\\dot{H}$. In Kaluza-Klein cosmology emergent scenario is possible only for a closed universe in case of normal and phantom scalar field. For a tachyonic field realization of emergent universe is possible for all models(closed, open and flat).
Megan Baumgart, Maureen Condon and Michael Loosemore, `03
Clinic, which consisted of a few nurses, a driver, and a pickup truck. The clinic traveled to outlying, in Belize, the healthcare system is almost purely preventative, with pre-natal care and early pediatric child, come to the mobile clinic to see a nurse or doctor. But it really was amazing to see how much
Ontology and Semantic Interoperability Thomas Bittner, Maureen Donnelly
Bittner, Thomas
computers, languages of underlying data exchange formats such as shapefiles, or dxf are used. Particularly
Adult Psychopathology (620) Professor: Maureen Zalewski, Ph.D.
Lockery, Shawn
disorders. Course Texts: (1) American Psychiatric Association, American Psychiatric Association, & DSM-5.: American Psychiatric Association. (2) Craighead, W. E., Miklowitz, D. J., & Craighead, L. W. (2013 Task Force. (2013). Diagnostic and statistical manual of mental disorders: DSM-5. Arlington, Va
A review of 'Ephelia,' ed. Maureen E. Mulvihill
Philip Milito
2004-01-01T23:59:59.000Z
publishers. Two densely documented and illustrated essays ran in American Notes & Queries (Fall, 1996; Summer, 1999); a detailed profile of ?Ephelia,? foregrounding Villiers, was published in An Encyclopedia of British Women Writers edited by Paul and June...
Klein-Nishina effects on the high-energy gamma-ray emission of gamma-ray bursts
Wang Xiangyu [Department of Astronomy, Nanjing University, Nanjing 210093 (China) and Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing 210093 (China)
2010-10-15T23:59:59.000Z
Prompt and long-lived high-energy (>100 MeV) gamma-ray emission has been detected by Fermi Large Area Telescope (LAT) recently from more than ten gamma-ray bursts. It has been suggested that such emission is produced by synchrotron radiation of electrons accelerated in internal and external shocks. Here we show that, during both the prompt and early afterglow phase, inverse-Compton (IC) scattering of these electrons with synchrotron photons are typically in the Klein-Nishina (KN) regime. For the prompt emission, the KN effect may strongly suppress the IC component, which is consistent with one single spectral component seen in some strong bursts, such as in GRB080916C and GRB090217. The KN inverse-Compton cooling may also affect the low-energy electron number distribution and hence results in a low-energy synchrotron photon spectrum harder than the standard fast-cooling spectrum n({nu}){proportional_to}{nu}{sup -3/2}. During the early afterglow, KN effect leads to a low Compton-Y parameter, which is generally less than a few in the first tens of seconds for a wide range of parameter space. Furthermore, we suggest that the KN effect can explain the somewhat faster than expected decay of the early-time high-energy emission observed in some GRBs.
Miguel Ballesteros; Ricardo Weder
2015-06-09T23:59:59.000Z
We study obstacle scattering for the Klein-Gordon equation in the presence of long-range magnetic potentials. We extend our previous results for the Klein-Gordon equation to the long-range case and bring to the relativistic scenario the results we previously proved for high-momenta long-range scattering for the Schr\\"odinger equation. Interestingly, we show that there are important differences between relativistic and non-relativistic scattering concerning long-range. In particular, we prove that the electric potential can be recovered without assuming that we know the long-range part of the magnetic potential, which has to be supposed in the non-relativistic case. We prove that the electric potential and the magnetic field can be recovered from the high momenta limit of the scattering operator, as well as fluxes modulo $2 \\pi $ around handles of the obstacle. Moreover, we prove that, for every $\\hat{\\mathbf v} \\in \\mathbb{S}^2$, $ A_\\infty(\\hat{\\mathbf v}) + A_\\infty(-\\hat{\\mathbf v})$ can be reconstructed, where $A_\\infty$ is the long-range part of the magnetic potential. We additionally give a simple formula of the high momenta limit of the scattering operator in terms of magnetic fluxes over handles of the obstacle and long-range magnetic fluxes at infinity, that we introduce in this paper. The appearance of these long-range magnetic fluxes is a new effect in scattering theory.
Kostas Skenderis; Marika Taylor
2006-05-09T23:59:59.000Z
We construct a holographic map between asymptotically AdS_5 x S^5 solutions of 10d supergravity and vacuum expectation values of gauge invariant operators of the dual QFT. The ingredients that enter in the construction are (i) gauge invariant variables so that the KK reduction is independent of any choice of gauge fixing; (ii) the non-linear KK reduction map from 10 to 5 dimensions (constructed perturbatively in the number of fields); (iii) application of holographic renormalization. A non-trivial role in the last step is played by extremal couplings. This map allows one to reliably compute vevs of operators dual to any KK fields. As an application we consider a Coulomb branch solution and compute the first two non-trivial vevs, involving operators of dimension 2 and 4, and reproduce the field theory result, in agreement with non-renormalization theorems. This constitutes the first quantitative test of the gravity/gauge theory duality away from the conformal point involving a vev of an operator dual to a KK field (which is not one of the gauged supergravity fields).
Sameer M. Ikhdair
2011-10-05T23:59:59.000Z
The approximate analytic bound state solutions of the Klein-Gordon equation with equal scalar and vector exponential-type potentials including the centrifugal potential term are obtained for any arbitrary orbital angular momentum number l and dimensional space D. The relativistic/non-relativistic energy spectrum equation and the corresponding unnormalized radial wave functions, in terms of the Jacobi polynomials P_{n}^{({\\alpha},{\\beta})}(z), where {\\alpha}>-1, {\\beta}>-1 and z\\in[-1,+1] or the generalized hypergeometric functions _{2}F_{1}(a,b;c;z), are found. The Nikiforov-Uvarov (NU) method is used in the solution. The solutions of the Eckart, Rosen-Morse, Hulth\\'en and Woods-Saxon potential models can be easily obtained from these solutions. Our results are identical with those ones appearing in the literature. Finally, under the PT-symmetry, we can easily obtain the bound state solutions of the trigonometric Rosen-Morse potential.
J. Ponce de Leon
2003-01-24T23:59:59.000Z
In the Randall-Sundrum brane-world scenario and other non-compact Kaluza-Klein theories, the motion of test particles is higher-dimensional in nature. In other words, all test particles travel on five-dimensional geodesics but observers, who are bounded to spacetime, have access only to the 4D part of the trajectory. Conventionally, the dynamics of test particles as observed in 4D is discussed on the basis of the splitting of the geodesic equation in 5D. However, this procedure is {\\em not} unique and therefore leads to some problems. The most serious one is the ambiguity in the definition of rest mass in 4D, which is crucial for the discussion of the dynamics. We propose the Hamilton-Jacobi formalism, instead of the geodesic one, to study the dynamics in 4D. On the basis of this formalism we provide an unambiguous expression for the rest mass and its variation along the motion as observed in 4D. It is independent of the coordinates and any parameterization used along the motion. Also, we are able to show a comprehensive picture of the various physical scenarios allowed in 4D, without having to deal with the subtle details of the splitting formalism. Moreover we study the extra non-gravitational forces perceived by an observer in 4D who describes the geodesic motion of a bulk test particle in 5D. Firstly, we show that the so-called fifth force fails to account for the variation of rest mass along the particle's worldline. Secondly, we offer here a new definition that correctly takes into account the change of mass observed in 4D.
Techno-Orientalism with Chinese Characteristics: Maureen F. McHugh’s China Mountain Zhang
Fan, Christopher T.
2015-01-01T23:59:59.000Z
china.html. ———. China Mountain Zhang. New York: Doherty,Ethnicity and Gender: China Mountain Zhang’s Transcendent2011), 285. McHugh, China Mountain Zhang, 6. Betsy Pei Chih
Eustice, Ryan
/Insurance Site visits/Reverse Site Visits Launching a New Center Earned Value Management (EVM) #12; it takes for all of us to partner with researchers to submit and/or manage winning proposals especially and Org Studies) (limited to 25 participants) Applied Excel (under development) Project Management
Shear wave splitting and the pattern of mantle flow beneath eastern Oregon Maureen D. Long a,
period of bimodal (basaltic and silicic) volcanism in both the High Lava Plains and Snake River Plain October 2009 Editor: Y. Ricard Keywords: intraplate volcanism High Lava Plains Blue Mountains Pacific Oregon includes the volcanically active High Lava Plains (HLP) province and the accreted terrains
2. Scaling Laws and Complexity in Fire Donald McKenzie and Maureen Kennedy
to define and quantify scales in communities or ecosystems. 2.1 Scale and Contagious Disturbance A contagious disturbance is one that spreads across a landscape over time, and whose intensity depends;2 2002). Some natural hazards (Cello and Malamud 2006), such as wildfires, are therefore contagious
Techno-Orientalism with Chinese Characteristics: Maureen F. McHugh’s China Mountain Zhang
Fan, Christopher T.
2015-01-01T23:59:59.000Z
subject formation within the socioeconomic space of US– China interdependency might look like: namely, as a racialized mode
NREL: Wind Research - Get to Know a Wind Energy Expert
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Get to Know a Wind Energy Expert The Evolution of a Wind Expert A professional headshot photo of Maureen Hand Maureen Hand Maureen Hand knows wind. Growing up in Glenrock, Wyoming,...
Application for Presidential Permit OE Docket No. PP-371 Northern...
Office of Environmental Management (EM)
Maureen Quinn Application for Presidential Permit OE Docket No. PP-371 Northern Pass: Comments from Maureen Quinn Application from Northern Pass to construct, operate and maintain...
Isotopic Analysis (Klein, 2007) | Open Energy Information
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 Data Center Home Page on DeliciousPlasmaP aCentrothermDepew,Independent EnergyInternational MaritimeOpenIrwin County,Islandia,Open
Geothermometry (Klein, 2007) | Open Energy Information
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 Data Center Home Page on DeliciousPlasmaP aCentrothermDepew, NewAl., 2012) | Open EnergyExploration <
An Orchard Snapshot By Bill Klein
and insecticides to the orchard. Most sprayers today utilize air to carry the water and spray material to the tree Evans Modern cherry harvest is typically done mechanically with a machine called a shaker. The cherry and sweet cherries were hand picked. Trees that took hours to harvest by hand can now be shaken at a rate
Operating System Verification --An Overview Gerwin Klein
Klein, Gerwin
is properly the first time (Parker, 2007). This engineer's credo has made it into popular literature
Signature of Seb Klein Signature of Seb Klein Signature of Steven Erhart
National Nuclear Security Administration (NNSA)
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:1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:5 TablesExports to3,1,50022,3,,0,,6,1,Separation 23Tribal EnergyCatalytic Coby Mods 002, 006, 020, 029, 0049,NASAAbout1Request forR. WallisRobert
Boyer, Edmond
in the patient head. Yet, the skull anisotropy happens to be highly anisotropic, and must then be modeled.e. for the brain and the scalp). A domain decomposition (DD) framework allows to split the global system. This work presents such a coupling formulation of a 3-DD method solving iteratively a BEM for the brain
Robertson, Randy
2007-01-01T23:59:59.000Z
not recorded in either the Wing Catalogue or the English Short Title Catalogue (Chronology, I, 39, 42). Such examples could be multiplied. One drawback to such a colossal work as the Chronology is that readers might mistake it for a comprehensive treatment...), Eighteenth Century Online (ECCO), and other online subscription services are astronomically expensive and have created a class system within academia. But the British Library has made the English Short Title Catalogue (ESTC) publicly accessible (estc...
The chaplins: a family of hydrophobic cell-surface proteins involved
Elliot, Marie A.
in Streptomyces coelicolor Marie A. Elliot,1,4 Nitsara Karoonuthaisiri,2 Jianqiang Huang,3 Maureen J. Bibb,1
Surface Gas Sampling (Klein, 2007) | Open Energy Information
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 Data Center Home Page onsource History View New PagessourceRavenand SomeSouthEnergyStiebelSullivan,SunshineSuperior, Arizona: EnergySurf
Leading the Charge: Christine Klein | 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 Data Center Home Page on DeliciousPlasma | Department of EnergyBrakingDepartment ofProgram ManagementLauren Caldwell Abouts o uLeading the
Fluid Inclusion Analysis (Klein, 2007) | Open Energy Information
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 Data Center Home Page on DeliciousPlasmaP aCentrothermDepew, New York:Essex County,sourcesource History View NewFluid Imaging Jump to:Fluid
The International Linear Collider as a Kaluza-Klein Factory
Biplob Bhattacherjee; Anirban Kundu
2005-09-02T23:59:59.000Z
In the minimal Universal Extra Dimension model, single production of n = 2 gauge bosons provides a unique discriminating feature from supersymmetry. We discuss how the proposed International Linear Collider can act as a n = 2 factory, much in the same vein as LEP. We also touch upon the potential of the gamma-gamma mode of the collider to study the production and the decay of an intermediate mass Higgs boson and its KK excitations.
Null energy in plane Kaluza-Klein worlds
David Solano; Rodrigo Alvarado
2005-10-02T23:59:59.000Z
We study the energy problem in the $R0X$ spacetimes in 5D. We found that for the Einstein, Landau-Lifschitz and the Moller complexes are null.
Klein's Group as a Borromean Object by Rene Guitart
Guitart, René - Institut de Mathématiques de Jussieu, Université Paris 7
in groups, boolean algebras, semi-rings, rings, fields. But the notion is introduced mainly for the case´een dans une cat´egorie. Nous don- nons des exemples dans les groupes, les alg`ebres de Boole, les semi borromean algebra Roughly speaking a borromean diagram for an object B is a presentation of this object B
Consistent Kaluza-Klein truncations via exceptional field theory
Hohm, Olaf
We present the generalized Scherk-Schwarz reduction ansatz for the full supersymmetric exceptional field theory in terms of group valued twist matrices subject to consistency equations. With this ansatz the field equations ...
Monomial Embeddings of the Klein Curve \\Lambda Iwan M. Duursma
Duursma, Iwan M.
of the automorÂ phism group. The curve has 24 flexpoints, i.e. points where the tangent intersects]. For the case N = 25, we first consider a configuration in PG(2; 8). Starting point are the seven points and seven lines of the Fano plane. Through the seven points pass 42 lines not in the Fano plane
Patterns on the Genus-3 Klein Quartic Carlo H. Squin
O'Brien, James F.
made on rapid-prototyping machines. Figure 1: Quilt made by Eveline SÃ©quin showing regular tiling heptagons obtained from Bill Thurston allowed my daughter Eveline to stitch together the quilt shown
Consistent Kaluza-Klein Truncations via Exceptional Field Theory
Hohm, Olaf
2014-01-01T23:59:59.000Z
We present the generalized Scherk-Schwarz reduction ansatz for the full supersymmetric exceptional field theory in terms of group valued twist matrices subject to consistency equations. With this ansatz the field equations precisely reduce to those of lower-dimensional gauged supergravity parametrized by an embedding tensor. We explicitly construct a family of twist matrices as solutions of the consistency equations. They induce gauged supergravities with gauge groups SO(p,q) and CSO(p,q,r). Geometrically, they describe compactifications on internal spaces given by spheres and (warped) hyperboloides $H^{p,q}$, thus extending the applicability of generalized Scherk-Schwarz reductions beyond homogeneous spaces. Together with the dictionary that relates exceptional field theory to D=11 and IIB supergravity, respectively, the construction defines an entire new family of consistent truncations of the original theories. These include not only compactifications on spheres of different dimensions (such as AdS$_5\\time...
Consistent Kaluza-Klein Truncations via Exceptional Field Theory
Olaf Hohm; Henning Samtleben
2015-01-29T23:59:59.000Z
We present the generalized Scherk-Schwarz reduction ansatz for the full supersymmetric exceptional field theory in terms of group valued twist matrices subject to consistency equations. With this ansatz the field equations precisely reduce to those of lower-dimensional gauged supergravity parametrized by an embedding tensor. We explicitly construct a family of twist matrices as solutions of the consistency equations. They induce gauged supergravities with gauge groups SO(p,q) and CSO(p,q,r). Geometrically, they describe compactifications on internal spaces given by spheres and (warped) hyperboloides $H^{p,q}$, thus extending the applicability of generalized Scherk-Schwarz reductions beyond homogeneous spaces. Together with the dictionary that relates exceptional field theory to D=11 and IIB supergravity, respectively, the construction defines an entire new family of consistent truncations of the original theories. These include not only compactifications on spheres of different dimensions (such as AdS$_5\\times S^5$), but also various hyperboloid compactifications giving rise to a higher-dimensional embedding of supergravities with non-compact and non-semisimple gauge groups.
Unification and explanation in early Kaluza-Klein theories
Muntean, Ioan Lucian
2009-01-01T23:59:59.000Z
attraction (Newton’s gravitation law). 251 D=3 because someand gravitation and not a specific phenomenon. The explananda, as we will see later are laws,law (this is the case with EM and electroweak theory). But gravitation
Gas Flux Sampling (Klein, 2007) | Open Energy Information
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The Melvin P. Klein Scientific Development Award | Stanford Synchrotron
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Compound and Elemental Analysis (Klein, 2007) | Open Energy Information
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From Klein's Platonic Solids to Kepler's Archimedean Solids: [3pt ...
Edray Herber Goins
2012-08-23T23:59:59.000Z
Aug 31, 2012 ... 122 55 · ?4 = 128 A4 B2 ? 144 B5 ? 192 A5 C ? 600 A B3 C + 1000 ... + 1725000 A4 B2 C2 ? 2025000 B5 C2 ? 1800000 A5 C3 + .... Page 19 ...
Grand canonical ensembles in general relativity David Klein1
Klein, David
-times. A systematic method for calculating Newtonian limits is given for a class of these space-times, which, space-time and energy-momentum coor- dinates are not easily decoupled as in the Newtonian case. One must energy of the vacuum that must be accounted for in a thermody- namic formalism. There are also
Dynamic Multiscale Visualization of Flight Data Tijmen Klein1
Telea, Alexandru C.
), epi- demics propagation, and crisis situation analysis. Within this context, we focus on the analysis of air- plane movement data sets. Such data sets consist of sev- eral airplane trajectories, or trails
A Pastiche of the Arts and Educational Research
McKean, Bobbi; Yarnelle, David
2007-01-01T23:59:59.000Z
music education in early childhood education. Maureen Harrisrenewed emphasis on early childhood education both in thearts beginning with early childhood education. Finally, Jess
Yoder, James S.
. · The 1997/1998 El Nino started in May 1997, peaked in November 1997, and ended in April 1998. The transition between El Nino and La Nina occurred between May and June 1998. La Nina started in July 1998, peaked in December 1998, and ended in February 2001. · A weaker El Nino started in May 2002, peaked in November 2002
AIAA-2003-0862 INFLOW AND FATIGUE RESPONSE OF THE NWTC ADVANCED
. Sutherland Wind Energy Technology Department Sandia National Laboratory Albuquerque, NM 87185-0708 hjsuthe@sandia.gov Neil D. Kelley M. Maureen Hand NREL/National Wind Technology Center Golden, CO 80401 neil_kelley@nrel.gov, maureen_hand@nrel.gov ABSTRACT The Long-term Inflow and Structural Test (LIST) program is collecting long
Career Center: Kleine Handbibliothek Diese Bcher knnen hchstens fr eine Woche ausgeliehen werden!
Bremen, Universität
Republik, Estland, Ungarn, Zypern, Portugal, Irland, Japan, Australien, Brasilien, Finnland, Kanada, Mexiko
Borromean Objects, as examplified by the group G168 of Klein's Quartic, linked with Moving Logic
Guitart, René - Institut de Mathématiques de Jussieu, Université Paris 7
} is a smooth algebraic curve, and so is riemannian, and her genus is 3. Its group of homographic symetries is G of borromean objects in rings (borromean rings !) or even in boolean algebras. Finally we explain how-rendu 2004-10/Mars 2004, LAMFA CNRS UMR 6140, 39-47. [4] R. Guitart, Moving Logic, from Boole to Galois
SIGNIFICANCE OF TRAFFIC PRODUCED TURBULENCE FOR URBAN DISPERSION MODELING Petra Kastner-Klein
Fedorovich, Evgeni
in reducing tail-pipe emissions, urban air pollution caused by mobile sources is still a major problem released inside the urban canopy. The street ventilation is then controlled by the interaction between buoyancy-related and traffic-induced air motions are secondary street-ventilation mechanisms compared
Controlled Collective Motion for Trajectory Tracking Daniel J. Klein and Kristi A. Morgansen
Morgansen, Kristi
are modeled as unit speed planar kinematic unicycles. A steering control law is derived for each individual so than one. A framework for steering controls is presented such that the unicycles stay near) was proposed for two vehicles with unit speed unicycle kinematics. The proposed steering control laws were
Tunnelling of scalar and Dirac particles from squashed charged rotating Kaluza-Klein black holes
M. M. Stetsko
2014-10-08T23:59:59.000Z
Thermal radiation of scalar particles and Dirac fermions from squashed charged rotating five-dimensional black holes is considered. To obtain temperature of the black holes we use the tunnelling method. In case of scalar particles we make use of the Hamilton-Jacobi equation. To consider tunnelling of fermions the Dirac equation was investigated. The examination shows that radial parts of the action for scalar particles and fermions in quasi-classical limit in the vicinity of horizon are almost the same and as a consequence it gives rise to the identical expressions for the temperature in both cases.
Microsoft PowerPoint - SRNL-L2100-2015-00033-S_Klein
Office of Environmental Management (EM)
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(References: Klein SA, RB McCoy, H Morrison, AS Ackerman, A
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Rudd Klein Alternative Energy Ventures LLC aka Phoenix Energy Fund | Open
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Microsoft PowerPoint - KLEIN_ARM_STM08_POSTER.ppt
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
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Microsoft PowerPoint - klein.cmwg.summary.pps [Compatibility Mode]
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Microsoft PowerPoint - klein.cmwg.summary.ppt [Compatibility Mode]
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:1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:5 TablesExports(Journal Article)41clothThe Bonneville PowerTariff Pages default SignEnergy Michigan: General DPortland,Estimates properties of
Microsoft PowerPoint - SRNL-L2100-2015-00033-S_Klein
Office of Environmental Management (EM)
Programs * Various Methods Used - Thermal Diffusion Columns - Batch Cryogenic Distillation * Thermal Cycling Absorption Process (TCAP) Fusion Energy (ITER) * Cryogenic...
PETER KLEIN~'~ -TOMASZ WAZNY~h~ C~Ordinariat fur Holzbiologie -Universitiit Hamburg)
Manning, Sturt
of the oak panels used by Rembrandt (BAUCH, ECKSTEIN 1981), Rubens (BAUCH ET ALII 1978) and other painters
NUMERICAL STUDY OF THE GENERALISED KLEIN--GORDON DENYS DUTYKH # , DIDIER CLAMOND, AND MARX CHHAY
. This regime is relevant in coastal engineering problems [31, 49, 57]. In open ocean only tsunami and tidal for most wave evolution problems in open oceans [1, 19, 34]. In the present paper, we present a detailed
Supersymmetric and Kaluza-Klein Particles Multiple Scattering in the Earth
Albuquerque, Ivone
2009-01-01T23:59:59.000Z
http://en.wikipedia.org/wiki/Earth#Chemical composition [12]Multiple Scattering in the Earth The IceCube CollaborationMultiple Scattering in the Earth Ivone F. M. Albuquerque
Comment on a Quintessence Particle Mass in the Kaluza-Klein Theory
M. W. Kalinowski
2003-12-30T23:59:59.000Z
We calculate a mass of a quintessence particle of order 0.00001 eV and we find several solutions for quintessence field equation. We consider also a quintessence speed of sound in several schemes and quintessence fluctuations.
Conditional stability theorem for the one dimensional Klein-Gordon equation
Demirkaya, Aslihan; Stanislavova, Milena
2011-10-24T23:59:59.000Z
. Then sup ? ? ?1 RH (? ± i0)Pa.c.(H )u?L?x ? C 1/2 ? u?L1x . (44) Note: The constant ? 1/2 in (44) is not stated in Lemma 8,18 (which is the high-frequency version regime, i.e., ? > >1), but it is very explicit in the estimates there...(t, x) ? S(R2) and t ? R, ? ? ? ? ? ? t 0 e?i(t?s) ? H ? H Pa.c.g(s, ·)ds ? ? ? ? ? L5t L10x ?L?t H 1x ? C?g?L2t L2x (R,?x?5dx) (6) Lemma 2.2: There exists a positive constant C such that for any g(t, x) ? S(R2) and t ? R, ? ? ? ? ?x??3/2 ? t 0 e?i...
Published Ahead of Print 27 June 2008. 2008, 190(17):5879. DOI: 10.1128/JB.00685-08.J. Bacteriol.
Elliot, Marie A.
. Kim C. Findlay, Mark J. Buttner and Marie A. Elliot Christina Di Berardo, David S. Capstick, Maureen J and Marie A. Elliot1,2 * Department of Biology and Institute for Infectious Disease Research, Mc
Fourth Annual Western Evolutionary Biology Meeting
Rose, Michael R.
Fourth Annual Western Evolutionary Biology Meeting University of California Presentation of the fourth annual Western Evolutionary Biologist of the Year (WEBEY) Award. 5:00 PM Fourth Annual WEBEY Address, Maureen Stanton, UC Davis 6:00 PM
Edwards, Paul N.
10:55--Building Hope and Confronting Fear: Explorations in Detroit Christopher J. McLaurin, ",,Lift Gaines) Maureen Kellett, "Fixture of a Changing Landscape: A History of Detroits Michigan Central Station
Highlights of the Fall 2013 Implementation Guidelines for
Su, Xiao
Highlights of the Fall 2013 Implementation Guidelines for Presidential Directive 2009-05 Maureen not permit financial aid for classes not required for the degree.) #12;THANKYOU!!! Fall 2013 Implementation
Introduction to a Sampling of Arts Integration Research
Burns, Maureen A.
2013-01-01T23:59:59.000Z
to a Sampling of Arts Integration Research By Maureen A.also noticed how the integration of music and math alsothey explored how the integration of the arts and sciences
University of California Shared Image Collections: Convergence and Expansion
Zentall, Lena; Burns, Maureen
2008-01-01T23:59:59.000Z
Marmor, “ArtSTOR: A Digital Library for the History of Art,”Lena Zentall, California Digital Library, and Maureen Burns,to painstakingly build a digital library of over 120,000
Reap, Maureen Elizabeth
1991-01-01T23:59:59.000Z
NITZSCHIA PUNGE1VS GRUNOW F. MULTISERIES HASLE: GROWTH PHASES AND TOXICITY OF CLONAL CULTURES ISOLATED FROM GALVESTON, TEXAS A Thesis by MAUREEN ELIZABETH REAP Submitted to the Once of Graduate Studies of Texas AkM University in partial... fulfillment of the requirements for the degree of MASTER OF SCIENCE May 1991 Major Subject: Oceanography NITZSCHIA PUNGENS GRUNOW F. MUITISERIES HASLE: GROWTH PHASES AND TOXICITY OF CLONAL CULTURES ISOLATED FROM GALVESTON) TEXAS A Thesis by MAUREEN...
Lapeyre, Guillaume
Dynamics of the Upper Oceanic Layers in Terms of Surface Quasigeostrophy Theory G. LAPEYRE AND P dynamics for nonlinear baroclinically unstable flows is examined using the concepts of potential vorticity density anomalies. Then, using the invertibility of potential vorticity, the dynamics are decomposed
Wisconsin at Madison, University of
1 OPTIMIZATION OF HYBRID GEOTHERMAL HEAT PUMP SYSTEMS Scott Hackel, Graduate Research Assistant, Madison, WI, United States Abstract: Hybrid ground-coupled heat pump systems (HyGCHPs) couple conventional ground- coupled heat pump (GCHP) equipment with supplemental heat rejection or extraction systems
Menczer, Filippo
and user access; (2) OIL, an ontology-based inference layer on top of the World Wide Web; (3) an associated of heterogeneous, distributed, and semi-structured documents typically found in large company intranets
van Harmelen, Frank
for semantic information processing and user access; (2) OIL, an ontology-based inference layer on top in large company intranets and the World Wide Web. The project's target results are: (1) a toolset
OPERATIONS ON THE A-THEORETIC NIL-TERMS JOACHIM GRUNEWALD, JOHN R. KLEIN AND TIBOR MACKO
Macko, Tibor
. For a space X, we define Frobenius and Verschiebung operations on the nil-terms NAfd Â± (X) in the algebraic K], [Rog03], but not much is known about the nil-terms. These are the subject of the present paper. Recall operations define a structure of a Z[NÃ?]-module on the homotopy groups of the nil-terms. Here NÃ? = {1, 2
I. Radinschi; Th. Grammenos
2005-08-01T23:59:59.000Z
We use Moeller's energy-momentum complex in order to explicitly compute the energy and momentum density distributions for an exact solution of Einstein's field equations with a negative cosmological constant minimally coupled to a static massless scalar field in a static, spherically symmetric background in (2+1)-dimensions.
Slow light in paraffin-coated Rb vapour cells M. KLEIN*yz, I. NOVIKOVAy, D. F. PHILLIPSy and
Walsworth, Ronald L.
-coated Rb cells, e.g., as a step towards the application of such vapour cells for a quantum memory [2, 17 aluminum box with attached resistive heater plates. The neck of the cell manifold is wrapped in resistive heater tape to provide additional heating of this region. The valve is then closed, isolating the cell
Firestone, Jeremy
NOMINATIONS INVITED · The Executive Director of the Karl W. Böer Solar Energy Medal of Merit Trust will be awarded to an individual who has made significant pioneering contributions in solar energy, wind energy to the fields of solar energy, wind energy, or other forms of renewable energy in other ways. PANEL OF JUDGES
Behnke, Sven
by a separate model preparation phase in order to fulfill Figure 1: C-Class model, closeup of windscreen wiper
Capsicum annuum (Cultivated) 4
James R. Manhart
2011-08-10T23:59:59.000Z
about the complexity of ecclesiastical polity. Those who continue to urge a portrait of the period as the seedbed of secular liberty will, like his contemporaries, find Goodwin a formidable obstacle and paradox. D. F. McKenzie and Maureen Bell, eds... (CSPD), the Journals of the House of Commons and the House of Lords, and the Court Books of the Stationers? Company during the span 1641-1700. As Maureen Bell notes in her brief introduction, McKenzie had relied on the indexes of many of these official...
van Harmelen, Frank
OIL in a Nutshell D. Fensel1, I. Horrocks2, F. Van Harmelen1,3, S. Decker4, M. Erdmann4, and M will present OIL, which is a proposal for such a standard. It is based on existing proposals such as OKBC, XOL the main ideas of OIL. 1 Introduction Currently, we are on the brink of the second Web generation. The Web
Shuang-Qing Wu
2009-02-12T23:59:59.000Z
It is shown that the Dirac equation is separable by variables in a five-dimensional rotating Kerr-(anti-)de Sitter black hole with two independent angular momenta. A first order symmetry operator that commutes with the Dirac operator is constructed in terms of a rank-three Killing-Yano tensor whose square is a second order symmetric Stackel-Killing tensor admitted by the five-dimensional Kerr-(anti-)de Sitter spacetime. We highlight the construction procedure of such a symmetry operator. In addition, the first law of black hole thermodynamics has been extended to the case that the cosmological constant can be viewed as a thermodynamical variable.
Ira Clark
2002-01-01T23:59:59.000Z
to be pictured more than traveled and geometric rather than iconic. His examination shows how London had been configured spatially through the performance of City Pageants, whose props along their routes and visual records of their land- marks prepared...
Abbasi, R.
2010-01-01T23:59:59.000Z
of the Sun as a function of neutrino energy, see Fig. 2.high energy neutrinos from the direction of the Sun. Despiteand energy losses of the neutrinos on their way out of the Sun,
Umbilical cord blood gas analysis at the time of
Aickelin, Uwe
Umbilical cord blood gas analysis at the time of delivery Maureen Harris, Sarah L. Beckley, Jonathan M. Garibaldi, Robert D. E Keith and Keith R. Greene Aims: it is now recommended that cord blood. In this paper our experience of cord blood analysis is described and the literature is reviewed to: (I) provide
IEEE JOURNAL OF BIOMEDICAL AND HEALTH INFORMATICS, 2015 1 Automated Clinical Assessment from Smart
Cook, Diane J.
, and Maureen Schmitter-Edgecombe Abstract--Smart home technologies offer potential benefits for assisting benefits of smart home-based analysis by monitoring daily behaviour in the home and predicting standard using Activity Behavior (CAAB) approach to model a smart home resident's daily behavior and predict
The Sequence of the Human Genome J. Craig Venter,1
Brutlag, Doug
Gangadharan Subramanian,1 Paul D. Thomas,1 Jinghui Zhang,1 George L. Gabor Miklos,2 Catherine Nelson,3 Samuel,1 Ping Guan,1 Thomas J. Heiman,1 Maureen E. Higgins,1 Rui-Ru Ji,1 Zhaoxi Ke,1 Karen A. Ketchum,1,1 Ming Lai Cheng,1 Liz Curry,1 Steve Danaher,1 Lionel Davenport,1 Raymond Desilets,1 Susanne Dietz,1
Next-generation phenomics for the Tree of Life June 26, 2013 AVAToL
Kaufman 12 , Edith Law 13 , Jing Liu 14 , Lisa Moore 15 , Maureen A O'Leary 16 , Maria Passarotti 12 J, Julius M, Kaufman S, Law E, Liu J, Moore L, O'Leary MA, Passarotti M, Ranade S, Simmons NB
Schroeder, NREL 27750 #12;ENVIRONMENTAL PERFORMANCE REPORT 2013 1 This report requires a tremendous amount maureen.ray@nrel.gov 303-275-3248 John Eickhoff Environmental Manager john.eickhoff@nrel.gov 303NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency
Anomalously thin transition zone and apparently isotropic upper mantle beneath Bermuda
for upwelling Margaret H. Benoit Department of Physics, College of New Jersey, Ewing, New Jersey, USA (benoit@tcnj.edu) Maureen D. Long Department of Geology and Geophysics, Yale University, New Haven, Connecticut, USA Scott D analyze shear wave splitting measurements to estimate mantle flow direction and receiver function stacks
URI inAdvance Online Newsletter November 6, 2008
Rhode Island, University of
on November 18 is our post- election Web chat with Professor of Political Science Maureen Moakley. Her topic World University Games in Harbin, China, from February 18 through 28. The U.S. University Select Team United States University Select Team. More... Keep Warm: R.I. Energy Solutions Expo at URI The Rhode
ReGional ColleGe Review 2010 Final RepoRt CaRlton tRail ReGional ColleGe
Saskatchewan, University of
Members Aaron Behiel Humboldt Ron Bessey Watson Andrew Burgess Director of Finance Maureen Doetzel-Cross Watrous Amy Yeager Director of Programs Community Participants Sharon Armstrong Resident of Wynyard Leigh. Demetrius Wasylyniuk St. Peter's College Board Carol Weiman Career and Employment Services Consultations
AIAA-2003-0862 INFLOW AND FATIGUE RESPONSE OF THE NWTC ADVANCED
pitch, rotor teeter, nacelle yaw and generator power. A total of 3299 10-minute records were collected. Sutherland Wind Energy Technology Department Sandia National Laboratory Albuquerque, NM 87185-0708 hjsuthe@sandia.gov Neil D. Kelley M. Maureen Hand NREL/National Wind Technology Center Golden, CO 80401 neil
Curriculum Vitae of KATE ZOELLNER
Vonessen, Nikolaus
. Complete national surveys including the ACRL Trends and Statistics Survey and NCES Academic LibrariesCurriculum Vitae of KATE ZOELLNER Maureen and Mike Mansfield Library kate://weblib.lib.umt.edu/faculty/zoellner EDUCATION Master of Science in Information, Library and Information Services, School of Information
The influence of small stresses on the dynamics of glaciers and subduction zones
Walter, Jacob Ineman
2012-01-01T23:59:59.000Z
in the Mexican subduction zone, Geofisica Internacional 49Mexican subduction zone, Geofisica Internacional 49 Klein,
Development of human brain connectivity in health and disease
Colby, John Benjamin
2012-01-01T23:59:59.000Z
Jones D. K. , Klein J. C. , Bartsch A. J. , and Behrens T.D.K. , Klein, J.C. , Bartsch, A.J. , Behrens, T.E.J. , 2007.
Imbesi, Philip
2012-10-19T23:59:59.000Z
Spectrometry), Philip Wymola and Melvin Williams (Stockroom), Bill Merka (Glass Shop), Derek Pitts and Mike Green (IT and Computing), Sanding Manning (Graduate Advising) and everyone from the business office. I had the unique opportunity to conduct a multi... Mount and Neeraj Gohad (Clemson U.), for our work on dual-mode anti-biofouling surfaces as well as a for great viii friendship that spanned my entire graduate career. Nick Aldred and Tony Clare (Newcastle U.), John Finlay and Maureen and Jim Callow...
Seasonal distribution of freshwater dolphins in Tipishca Del Samiria, Peru
Zuniga, Elizabeth Luisa
1999-01-01T23:59:59.000Z
of thanks goes to Maureen Whittaker for endless hours of data entry, sorting and tracing fins, and for helping me get posters together for conferences. Suzanne (Chunk) Yin answered my endless questions during the writing and defense process. Thanks..., include a high rate of entanglement in fishing nets (Brownell et al. 1989, Pinedo et al. 1989, Corcuera et al. 1998) and subsequent use of the carcass as shark bait (Fidelix et al. 1998). Finally, the tucuxi is particularly susceptible to entrapment...
A review of "English Clandestine Satire, 1660-1702" by Harold Love
Ezell, Margaret J.M.
2007-01-01T23:59:59.000Z
perspectives on familiar authors and texts and at the same time highlights new ways of considering the significance of the sites of production and the modes of transmission as part of understanding the poetics of the text and the dynamics of the period. Anthony... Adolph. Full of Soup and Gold: The Life of Henry Jermyn. London: Anthony Adolph, 2006. Cloth. 324 pp., 31 images. ?17.95. Review by MAUREEN E. MULVIHILL, PRINCETON RESEARCH FORUM, PRINCETON, NEW JERSEY. Revisionist biographers must be master...
Martin, Timothy
, waxes) and respiration fluxes in southeastern U.S. pine forests Behzad Mortazavi,1,2,3 Maureen H. ConteCSC), and waxes (dCW)) and respiratory carbon (foliage (dCFR), soil (dCSR) and ecosystem 13 CO2 (dCER)) for two-alkanoic acid wax molecular cluster was twice that observed for dCOM and the predominant C2226 compound cluster
Implications of Comorbidity and Ascertainment Bias for Identifying Disease Genes
individual, comorbidity between two dis- orders, A and B, may occur for a variety of reasons [Klein and Riso
Quantum walks and relativistic quantum simulations
Blatt, Rainer
in a quantum simulation of the Klein para- dox. The position and momentum of a relativistic Dirac particle
WASHINGTON UNIVERSITY Division of Biology and Biomedical Sciences
Eddy, Sean
. Elena Rivas, Dr. Todd Lowe, Robin Dowell, Robert Klein and Thomas Jones for their help with my computer
C. Wetterich List of Publications, 1977-1994
Heermann, Dieter W.
(1984) 48 31) C. Wetterich: Kaluza-Klein cosmology and the inflationary universe, Nucl. Phys. B252 (1985
an efficient source of spin-entangled EPR pairs Hanbury-Brown and Twiss (HBT) Australia 1916 -2002 Radio stars: R. Hanbury Brown and R. Q. Twiss, "A New Type of Interferometer for Use in Radio Astronomy", Philosophical Magazine (7) 45 p663 (1954) Optical:R. Hanbury Brown and R. Q. Twiss, "A Test of a New Type
. Peng Los Alamos National Laboratory, Los Alamos, New Mexico 87545 C. N. Brown, W. E. Cooper, Y. B as a signature of quarkgluon plasma formation[2], has generated renewed interest in the subject of hadron energies[11, 12, 13, 14], did not have adequate statistics or mass resolution to extract information
Pecon, Jill Maureen
1980-01-01T23:59:59.000Z
fulfillment of the requirement for the deSree of MASTER OF SCIENCE May 1980 Major Sub;ect: Oceanography THE EI'1'ECTS 01' HISTIDIJJE OIJ 'I'. !L' UPTAKE OI' CADMIUM I'ROM THE DIGESTIyi. SYSTIJM OF THE BLUE CRAB (CALLINFCTJ, S SAPIDUS, RATHBLR1) A Thesi.... s By JILL MAUREEN PECON Approved as to style and rontent by: Chaizin o f Commi-tf ee Member Member Member ~&I Mme+~. Head of Department May 1980 AB S TRACT The Effect of Histidine on the Uptake of Cadmium from the Digestive System of the Blue Crab...
Volume 72, Numbers 3 & 4 (Complete)
Dickson, Donald R.
2014-01-01T23:59:59.000Z
Nicky Hallett, The Senses in Religious Communities, 1600-1800: Early Modern “Convents of Pleasure.” Review by elena levy-navarro .................. 206 S u s a n n e Wo o d s , M i l t o n a n d t h e Po e t i c s o f F r e e d o m . Review... the Ancient s : The Fir s t Ita l ian Mythography. Review by catherine gimelli martin ........................................... 264 David Cast, ed. The Ashgate Research Companion to Giorgio Vasari. Review by maureen pelta, moore college of art and design...
Aune, M. G.
2014-01-01T23:59:59.000Z
Nicky Hallett, The Senses in Religious Communities, 1600-1800: Early Modern “Convents of Pleasure.” Review by elena levy-navarro .................. 206 S u s a n n e Wo o d s , M i l t o n a n d t h e Po e t i c s o f F r e e d o m . Review... the Ancient s : The Fir s t Ita l ian Mythography. Review by catherine gimelli martin ........................................... 264 David Cast, ed. The Ashgate Research Companion to Giorgio Vasari. Review by maureen pelta, moore college of art and design...
Biasutti, Michela
Retirement Administration Vacant Sr. Benefits Systems Analyst Althea Klein Manager Health & Welfare Karen Transaction Coordinator Vacant Transaction Coordinator Nazim Ali Transaction Coordinator Loretta Gonzalez
Blazed high-efficiency x-ray diffraction via transmission through arrays of
with the x-ray microscope at BESSY," Rev. Sci. Instrum. 66, 1282-1286 (1995). 12. A. G. Klein and S. A
: (). (). , () : . , . ( 3·10-5 ), , . . , , , . BESSY-I () [2. .. , .. , .. , .. , .. , .. , .. , .. , .. , .. , .. , .. , .. , .. , .. , .. , .. , .. , .. , .. , .. , .. , .. , .. , .. , .. . -4 // , 2010, 1, . 2033. 2. R. Klein et al. Measurement of the BESSY II Electron Beam Energy
RESEARCH ARTICLE 10.1002/2014GC005407
Kreemer1,2, Geoffrey Blewitt1,2, and Elliot C. Klein1,3 1 Nevada Bureau of Mines and Geology, University
IceCube: A Cubic Kilometer Radiation Detector
Klein, S.; IceCube Collaboration
2008-01-01T23:59:59.000Z
Cubic Kilometer Radiation Detector The IceCube CollaborationA Cubic Kilometer Radiation Detector Spencer R. Klein, forlarge detector is to search for optical Cherenkov radiation
Strategies for Successful Implementation of Virtual Weigh and Compliance Systems in California
Regan, Amelia
2006-01-01T23:59:59.000Z
two types, intrusive and non-intrusive (Mimbela and Klein,On the other hand, non-intrusive sensors are mounted
MEMORANDUM FOR DISTRIBUTION FROM: JAMES A. RISPOLI ASSISTANT...
Office of Environmental Management (EM)
paper Distribution Keith A. Klein, Manager, Richland Operations Office Shirley Olinger, Acting Manager, Office of River Protection Frazer R. Lockhart, Manager, Rocky Flats...
The first (almost) half century of the TEXAS Symposia
Trimble, V; Trimble, V
2011-01-01T23:59:59.000Z
microwave background, gamma ray bursts.) perpetuated theradiation, extragalactic gamma ray bursts, Kaluza-Klein,1974 had a review of gamma ray burst models given by Mal
THE ACCESS ALMANAC - Parking Charity
Shoup, Donald
2014-01-01T23:59:59.000Z
1243–1248. Eric Klein. 2010. “Parking Holiday Approved for8. Brandon Mathis. 2013. “Free Parking Downtown Not Loved byto Offer Free Downtown Parking for Two Weeks before
Theor. Comput. Fluid Dyn. (2006) 20: 525551 DOI 10.1007/s00162-006-0027-9
Majda, Andrew J.
2006-01-01T23:59:59.000Z
in the development of Systematic multiscale models for the tropics in Majda and Klein [J. Atmosph. Sci. 60: 393Â408, 2003] and Majda and Biello [PNAS, 101: 4736Â4741, 2004]. Biello and Majda [J. Atmosph. Sci. 62: 1694, Germany E-mail: rupert.klein@zib.de A. J. Majda Courant Institute of Mathematical Sciences, New York
doi: 10.1149/1.3569920 2011, Volume 35, Issue 3, Pages 271-276.ECS Trans.
Rossi, Enrico
. Bardarson and Piet W. Brouwer Klein Tunneling in Graphene p-n-p Junctions service Email alerting click ECS - The Electrochemical Society #12;Klein tunneling in graphene p-n-p junctions E. Rossi1 , J. H of graphene p-n-p junctions. We first analyze the ideal case of a clean system and then study the realistic
Power Analysis Attacks against FPGA Implementations Shaohua Tang1
International Association for Cryptologic Research (IACR)
Power Analysis Attacks against FPGA Implementations of KLEIN Shaohua Tang1 , Jianhao Wu1 , Weijian not consider the potential attacks by power analysis methods. This paper presents power analysis attacks and complexity of our attacks via power analysis against KLEIN are discussed in detail. Besides
Boyer, Edmond
that MgB2 belongs to an origi- nal class of superconductors in which two weakly coupled bands with very the existence of two distinct superconducting gaps. One of the main consequence of this two-band superconduc of the superconducting gaps with Al doping remains controversial. Whereas Gonnelli et al.15 sug- gested that the small
DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]
Dunn, John J.; McCorkle, Sean R.; Praissman, Laura A.; Hind, Geoffrey; Van der Lelie, Daniel; Bahou, Wadie F.; Gnatenko, Dmitri V.; Krause, Maureen K.
Genomic Signature Tags (GSTs) are the products of a method we have developed for identifying and quantitatively analyzing genomic DNAs. The DNA is initially fragmented with a type II restriction enzyme. An oligonucleotide adaptor containing a recognition site for MmeI, a type IIS restriction enzyme, is then used to release 21-bp tags from fixed positions in the DNA relative to the sites recognized by the fragmenting enzyme. These tags are PCR-amplified, purified, concatenated and then cloned and sequenced. The tag sequences and abundances are used to create a high resolution GST sequence profile of the genomic DNA. [Quoted from Genomic Signature Tags (GSTs): A System for Profiling Genomic DNA, Dunn, John J.; McCorkle, Sean R.; Praissman, Laura A.; Hind, Geoffrey; Van der Lelie, Daniel; Bahou, Wadie F.; Gnatenko, Dmitri V.; Krause, Maureen K., Revised 9/13/2002
ARM Climate Modeling Best Estimate from Nauru (ARMBE-CLDRAD TWPC2 V2.1)
DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]
McCoy, Renata; Xie, Shaocheng
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]
McCoy, Renata; Xie, Shaocheng
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
ARM Climate Modeling Best Estimate from Manus Island, PNG (ARMBE-CLDRAD TWPC1 V2.1)
DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]
McCoy, Renata; Xie, Shaocheng
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
ARM Climate Modeling Best Estimate from Nauru (ARMBE-CLDRAD TWPC1)
DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]
McCoy, Renata; Xie, Shaocheng
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
ARM Climate Modeling Best Estimate Lamont, OK (ARMBE-CLDRAD SGPC1)
DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]
McCoy, Renata; Xie, Shaocheng
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]
McCoy, Renata; Xie, Shaocheng
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
ARM Climate Modeling Best Estimate from Nauru (ARMBE-CLDRAD TWPC2)
DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]
McCoy, Renata; Xie, Shaocheng
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
ARM Climate Modeling Best Estimate Barrow, AK (ARMBE-CLDRAD NSAC1 V2.1)
DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]
McCoy, Renata; Xie, Shaocheng
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
ARM Climate Modeling Best Estimate from Darwin, AU (ARMBE-CLDRAD TWPC3 V2.1)
DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]
McCoy, Renata; Xie, Shaocheng
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]
McCoy, Renata; Xie, Shaocheng
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]
McCoy, Renata; Xie, Shaocheng
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
ARM Climate Modeling Best Estimate Lamont, OK (ARMBE-CLDRAD SGPC1)
DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]
McCoy, Renata; Xie, Shaocheng
The ARM CMBE-CLDRAD [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected cloud and radiation relevant quantities from ACRF observations
ARM Climate Modeling Best Estimate from Nauru (ARMBE-CLDRAD TWPC3)
DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]
McCoy, Renata; Xie, Shaocheng
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
ARM Climate Modeling Best Estimate Barrow, AK (ARMBE-CLDRAD NSAC1)
DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]
McCoy, Renata; Xie, Shaocheng
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
Probing Universal Extra Dimension at the International Linear Collider
Gautam Bhattacharyya; Paramita Dey; Anirban Kundu; Amitava Raychaudhuri
2005-09-02T23:59:59.000Z
In the context of an universal extra-dimensional scenario, we consider production of the first Kaluza-Klein electron positron pair in an $e^+e^-$ collider as a case-study for the future International Linear Collider. The Kaluza-Klein electron decays into a nearly degenerate Kaluza-Klein photon and a standard electron, the former carrying away missing energy. The Kaluza-Klein electron and photon states are heavy with their masses around the inverse radius of compactification, and their splitting is controlled by radiative corrections originating from bulk and brane-localised interactions. We look for the signal event $e^+e^- +$ large missing energy for $\\sqrt s = 1$ TeV and observe that with a few hundred fb$^{-1}$ luminosity the signal will be readily detectable over the standard model background. We comment on how this signal may be distinguished from similar events from other new physics.
Real fish, real numbers, real jobs (A subscription for Intelligencer is needed to follow this link) Portraits of Gauss for sale, also Klein bottles for all your needs, etc
ARM Climate Modeling Best Estimate Barrow, AK (ARMBE-ATM NSAC1)
DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]
McCoy, Renata; Xie, Shaocheng
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
ARM Climate Modeling Best Estimate From Darwin, AU (ARMBE-ATM TWPC3)
DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]
McCoy, Renata; Xie, Shaocheng
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
ARM Climate Modeling Best Estimate From Manus Island, PNG (ARMBE-ATM TWPC1)
DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]
McCoy, Renata; Xie, Shaocheng
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
ARM Climate Modeling Best Estimate Lamont, OK (ARMBE-ATM SGPC1)
DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]
McCoy, Renata; Xie, Shaocheng
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
ARM Climate Modeling Best Estimate From Nauru (ARMBE-ATM TWPC2)
DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]
McCoy, Renata; Xie, Shaocheng
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
ARM Climate Modeling Best Estimate From Darwin, AU (ARMBE-ATM TWPC2)
DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]
McCoy, Renata; Xie, Shaocheng
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
ARM Climate Modeling Best Estimate Barrow, AK (ARMBE-ATM NSAC1 V4)
DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]
McCoy, Renata; Xie, Shaocheng
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
2007/48 Single Item Lot-Sizing with Non-Decreasing Capacities
2007-08-05T23:59:59.000Z
Jun 2, 2007 ... Klein [8] with a dynamic programming algorithm running in O(n4), where n is the ... that Dt ? Ct is made without loss of generality. This holds ...
COMPARATIVE COSTS OF CALIFORNIA CENTRAL STATION ELECTRICITY
CALIFORNIA ENERGY COMMISSION COMPARATIVE COSTS OF CALIFORNIA CENTRAL STATION ELECTRICITY GENERATIONCann Please use the following citation for this report: Klein, Joel. 2009. Comparative Costs of California............................................................................................................................1 Changes in the Cost of Generation Model
COMMUNITYMAGAZINE VAN DE UGENT De duurzaamheidsvisie
Gent, Universiteit
;2 DURF DENKEN 3D-PRINTING `CREATIVITEIT WORDT WERKELIJKHEID, LAAG NA LAAG' #12;3 Studenten laten maken. We onderzoeken nu ook hoe we 3D-printing kunnen inzetten in de productie van kleine reeksen
University of Saskatchewan Sustainability Assessment
Peak, Derek
· Management for Sustainability · Energy · Transportation · Waste #12;Executive Summary Page 2 of 90 UUniversity of Saskatchewan Sustainability Assessment Prepared by: Kerri Klein Sustainable, Micheal Molaro and Jennifer Menzies) for their confidence in the vision of a sustainable University
Mazzullo, Elsa Kapitan
1983-01-01T23:59:59.000Z
mates Kim Henke, Dr. Lee T. Billingsley, and Michael Tsenn, and fellow graduate students Craig and Lisa Klein, George Staff, Chris Dean, Bob Curtis, Carl Steffenson, Chip Whiting, Steve Levine, Cathy Strong, Cowboy Frank Hansen, and Richard Theiss...
ARM Climate Modeling Best Estimate Barrow, AK (ARMBE-ATM NSAC1 V4)
McCoy, Renata; Xie, Shaocheng
2013-12-26T23:59:59.000Z
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
ARM Climate Modeling Best Estimate from Nauru (ARMBE-CLDRAD TWPC1)
McCoy, Renata; Xie, Shaocheng
2012-05-14T23:59:59.000Z
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
ARM Climate Modeling Best Estimate Lamont, OK (ARMBE-CLDRAD SGPC1)
McCoy, Renata; Xie, Shaocheng
2012-02-20T23:59:59.000Z
The ARM CMBE-CLDRAD [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected cloud and radiation relevant quantities from ACRF observations
ARM Climate Modeling Best Estimate From Darwin, AU (ARMBE-ATM TWPC2)
McCoy, Renata; Xie, Shaocheng
2013-12-26T23:59:59.000Z
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
ARM Climate Modeling Best Estimate From Manus Island, PNG (ARMBE-ATM TWPC1)
McCoy, Renata; Xie, Shaocheng
2012-05-14T23:59:59.000Z
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
ARM Climate Modeling Best Estimate From Darwin, AU (ARMBE-ATM TWPC3)
McCoy, Renata; Xie, Shaocheng
2013-12-26T23:59:59.000Z
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
ARM Climate Modeling Best Estimate from Nauru (ARMBE-CLDRAD TWPC3)
McCoy, Renata; Xie, Shaocheng
2012-05-14T23:59:59.000Z
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
ARM Climate Modeling Best Estimate from Nauru (ARMBE-CLDRAD TWPC2)
McCoy, Renata; Xie, Shaocheng
2012-05-14T23:59:59.000Z
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
ARM Climate Modeling Best Estimate From Darwin, AU (ARMBE-ATM TWPC3)
McCoy, Renata; Xie, Shaocheng
2013-12-27T23:59:59.000Z
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
ARM Climate Modeling Best Estimate Lamont, OK (ARMBE-ATM SGPC1)
McCoy, Renata; Xie, Shaocheng
2012-05-14T23:59:59.000Z
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
ARM Climate Modeling Best Estimate Lamont, OK (ARMBE-ATM SGPC1)
McCoy, Renata; Xie, Shaocheng
2013-12-26T23:59:59.000Z
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
ARM Climate Modeling Best Estimate Barrow, AK (ARMBE-CLDRAD NSAC1)
McCoy, Renata; Xie, Shaocheng
2012-05-14T23:59:59.000Z
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
ARM Climate Modeling Best Estimate Lamont, OK (ARMBE-ATM SGPC1)
McCoy, Renata; Xie, Shaocheng
2011-12-13T23:59:59.000Z
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
ARM Climate Modeling Best Estimate Lamont, OK (ARMBE-CLDRAD SGPC1)
McCoy, Renata; Xie, Shaocheng
2012-05-14T23:59:59.000Z
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
ARM Climate Modeling Best Estimate From Manus Island, PNG (ARMBE-ATM TWPC1)
McCoy, Renata; Xie, Shaocheng
2013-12-26T23:59:59.000Z
The ARM CMBE-ATM [Xie, McCoy, Klein et al.] data file contains a best estimate of several selected atmospheric quantities from ACRF observations and NWP analysis data.
faculteit elektrotechniek, wiskunde & informatica engineering
je helpen. Het onderwijs aan onze opleiding is van zeer hoog niveau. Alle docenten zijn stuk voor stuk uitstekende ingenieurs, met een internationale reputatie. Het onderwijs vindt plaats in kleine
Kennismaking Praktische Sterrenkunde Practicum 3 Flatfields
Peletier, Reynier
steeds klein! Lees eerst in het bijgaande stuk over het algemene nut van flatfields en hoe je ze maakt is. Waarom hoeft dit stuk koepel niet 100% procent egaal belicht te zijn? Met onze 40cm telescoop
Invariant classification of orthogonally separable Hamiltonian systems in Euclidean space
Joshua T. Horwood; Raymond G. McLenaghan; Roman G. Smirnov
2006-05-07T23:59:59.000Z
The problem of the invariant classification of the orthogonal coordinate webs defined in Euclidean space is solved within the framework of Felix Klein's Erlangen Program. The results are applied to the problem of integrability of the Calogero-Moser model.
Noncommutativity and the Friedmann Equations
Sabido, M.; Socorro, J. [Physics Department of the Division of Science and Engineering of the University of Guanajuato, Campus Leon P.O. Box E-143, 37150 Leon Gto. (Mexico); Guzman, W. [Instituto de Fisica, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, 21945-970, Rio de Janeiro (Brazil)
2010-07-12T23:59:59.000Z
In this paper we study noncommutative scalar field cosmology, we find the noncommutative Friedmann equations as well as the noncommutative Klein-Gordon equation, interestingly the noncommutative contributions are only present up to second order in the noncommutitive parameter.
AN EQUAL OPPORTUNITY/AFFIRMATIVE ACTION UNIVERSITY The University of Texas at Dallas
O'Toole, Alice J.
, Daniel Cohen, David Cordell, Gregg Dieckmann, John Ferguson, Jeremy Hall, Joe Izen, Kamran Kiasaleh Jamison, Serenity King, Abby Kratz, Emily Tobey, Austin Cunningham, Kayla Klein 1. CALL TO ORDER
AN EQUAL OPPORTUNITY/AFFIRMATIVE ACTION UNIVERSITY The University of Texas at Dallas
O'Toole, Alice J.
: Shawn Alborz, Bobby Alexander, Peter Assman, Kurt Beron, Gail Breen, John Burr, Cy Cantrell, Gregg, Kayla Klein, Austin Cunningham, Blair Flicker 1. CALL TO ORDER, ANNOUNCEMENTS AND QUESTIONS Speaker Leaf
FTD/am; Quelle: MPI fr Dynamik und Selbstorganisation Pennsylvania
Amaral, Luis A.N.
Arkansas Pennsylvania New Mexico Kalifornien Bis hierher und nicht weiter Mobilitätsgrenzen in den USA medizini- sche Anwendungen entwickelt, der die Positronenemissionstomografie (PET) mit der Detektionsempfindlichkeit der PET verbunden werden. Bislang können allerdings nur kleine Labor- tiere untersucht werden. FTD
Röder, Beate
's Ear (1997) Violoncello und Stimme (2003) Chris Dench ik(s)land[s] (1997/98) 14:30 Uhr Raum 158 Diotima dieser kleine Blinde jetzt wieder von vorn beginnt: Oder einfach ei
e-mail address www.sciencedirect.com
Massa, Eugenio - Instituto de Ciências Matemáticas e de Computação, Universidade de São Paulo
, Issue 1, January 2010, Pages 111-126 Hakl, R.; Torres, P.J. 13. Weighted energy decay for 3D Klein of Differential Equations October to December 2009 RSS Blog This! Print Show condensed 1. Some critical point
Energy-momentum relation for solitary waves of nonlinear Dirac equations
T. V. Dudnikova
2014-04-28T23:59:59.000Z
Solitary waves of nonlinear Dirac, Maxwell-Dirac and Klein-Gordon-Dirac equations are considered. We prove that the energy-momentum relation for solitary waves coincides with the Einstein energy-momentum relation for point particles.
Informal Report PRELIMINARY EVALUATION OF POTENTIAL
Brookhaven National Laboratory
OF SEDIMENT DECONTAMINATION FACILITIES FOR NEW YORK/NEW JERSEY HARBOR Michael D. Rowe Robert C. Klein Keith W PRELIMINARY EVALUATION OF POTENTIAL OCCUPATIONAL AND PUBLIC HEALTH IMPACTS OF SEDIMENT DECONTAMINATION
Project ELLA: English Language and Literacy Acquisition
Lara-Alecio, Rafael; Irby, Beverly J.; Mathes, Patricia G.; Rodriguez, Rosalinda; Tong, Fuhui; Guerrero, Cindy; Quiros, Ana; Cox, Kathleen; Castellanos, Mary
2010-10-22T23:59:59.000Z
District; Fuhui Tong, Texas A&M University; Cindy Guerrero, Ana Quiros, Kathleen Cox, and Mary Castellanos, Coordinators This project is funded by Institution of Education Sciences, DOE R305P030032 WALLER ISD TOMBALL ISD KLEIN ISD CYPRESS...
Design for a brain revisited: The neuromorphic design and functionality of the interactive
Rutishauser, Ueli
, Rodney J Douglas, Klaus Hepp, David Klein, Jonatas Manzolli1 , Matti Mintz2 , Fabian Roth, Ueli Rutishauser, Klaus Wassermann, Adrian M Whatley, Aaron Wittmann, Reto Wyss, Paul F M J Verschure Institute
Rutishauser, Ueli
Costa, Tobi Delbrück, Rodney J Douglas, Klaus Hepp, David Klein, Jonatas Manzolli1 , Matti Mintz2 Wyss, Paul F M J Verschure Institute of Neuroinformatics, University/ETH Zurich, Switzerland, www
TOWARDS A SYSTEMATIC REPOSITORY OF KNOWLEDGE ABOUT MANAGING COLLABORATIVE DESIGN CONFLICTS1
of concurrent engineering practices such as multi-disciplinary design teams (Klein 1994). A key barrier including computer science, industrial engineering, and management science, to mention just a few. Previous
Falge, Eva
Brennstoffzelle, die im Mittelpunkt des ProBio-Projekts steht: Bei Brennstoffzellen handelt es sich um kleine zusammenkommen. BRENNSTOFFZELLE ERHÖHT DIE STROMAUSBEUTE Auch bei der Behandlung der Biomasse geben sich die Max
Ueber die geometrischen Eigenschaften der Kreisbogenvierecke
Kaiserlich Leopoldinisch-Carolinische Deutsche Akademie der Naturforscher
2012-04-25T23:59:59.000Z
danken hat Herr Professor F. Klein in dem erwähnten Seminar mitgeteilt. 1. ) i. ) Vgl. auch Stephanos, Bull, de la Societe Mathem. deFrance, 1882, X, 134—137.
The Origins of Korean Adoption: Cold War Geopolitics and Intimate Diplomacy
Kim, E
2015-01-01T23:59:59.000Z
Klein, Christina. 2003. Cold War Orientalism: Asia in theJanuary. ––––. 1953a “First Korean War Baby Brought Here byRace and the Post-World-War-II Translation of ‘American. ’”
Circular dichroism of planar chiral magnetic metamaterials
Circular dichroism of planar chiral magnetic metamaterials M. Decker, M. W. Klein, and M. Wegener 78002); published March 5, 2007 We propose, fabricate, and study a double-layer chiral planar
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
2011. * DeSoto, W.; Klein, S.A.; Beckman, W.A.; Improvement and Validation of a Model for Photovoltaic Array Performance. Solar Energy, 80(1), 2006. * Dobos, A.P.; An Improved...
WORKSHOP ON DISORDERED MATERIALS
Glyde, Henry R.
and soft matter: Lithium conducting polymers. Saboungi 9:30 Lennox Iton Molecules in zeolites. 10:00 Henry Glyde Disordered quantum systems. 10:30 COFFEE 11:00 Discussion and Wrap-up (David Price, Michael Klein
The bootstrap multiscale analysis for the multi-particle Anderson model
Abel Klein; Son T. Nguyen
2012-12-22T23:59:59.000Z
We extend the bootstrap multi-scale analysis developed by Germinet and Klein to the multi-particle Anderson model, obtaining Anderson localization, dynamical localization, and decay of eigenfunction correlations.
Bootstrap multiscale analysis and localization for multi-particle continuous Anderson Hamiltonians
Abel Klein; Son Nguyen
2014-04-15T23:59:59.000Z
We extend the bootstrap multiscale analysis developed by Germinet and Klein to the multi-particle continuous Anderson Hamiltonian, obtaining Anderson localization with finite multiplicity of eigenvalues, decay of eigenfunction correlations, and a strong form of dynamical localization.
Ho, Tony
2012-01-01T23:59:59.000Z
and ED Rogdakis, "A Kalina power cycle driven by renewableSA Klein, "Absorption power cycles," Energy, vol. 21, pp.study of the Kalina power cycle in connection with a
Three dimensional finite element analysis of the flow of polymer melts
Jimack, Peter
Three dimensional finite element analysis of the flow of polymer melts R. Tencheva , T. Goughb , O.G, LS2 9JT, UK. b School of Engineering, Design & Technology, University of Bradford, Bradford, BD7 1DP.g.harlen@leeds.ac.uk (O.G. Harlen), p.k.jimack@leeds.ac.uk (P.K. Jimack), h.klein@leeds.ac.uk (D.H. Klein), m
O. Chavoya-Aceves
2004-09-25T23:59:59.000Z
The Hamilton-Jacobi method is generalized, both, in classical and relativistic mechanics. The implications in quantum mechanics are considered in the case of Klein-Gordon equation. We find that the wave functions of Klein-Gordon theory can be considered as describing the motion of an ensemble of particles that move under the action of the electromagnetic field alone, without quantum potentials, hidden uninterpreted variables, or zero point fields. The number of particles is not locally conserved.
Klein, Ross Hunter
2011-02-22T23:59:59.000Z
QUALITY OF LIFE ASSESSMENT AS A PRELIMINARY STUDY ON THE SPATIAL APPRAISAL AND VALUATION OF ENVIRONMENT AND ECOSYSTEMS METHODOLOGY A Thesis by ROSS HUNTER KLEIN Submitted to the Office of Graduate Studies of Texas A&M University... Preliminary Study on the Spatial Appraisal and Valuation of Environment and Ecosystems Methodology. (December 2010) Ross Hunter Klein, B.S., Texas A&M University Chair of Advisory Committee: Dr. Douglas Koushen Loh The concept of quality of life (QOL...
Extra dimensions and Seesaw Neutrinos at the International Linear Collider
Tomoyuki Saito; Masaki Asano; Keisuke Fujii; Naoyuki Haba; Shigeki Matsumoto; Takehiro Nabeshima; Yosuke Takubo; Hitoshi Yamamoto; Koichi Yoshioka
2010-11-27T23:59:59.000Z
We study the capability of the international linear collider (ILC) to probe extra dimensions via the seesaw mechanism. In the scenario we study, heavy Kaluza-Klein neutrinos generate tiny neutrino masses and, at the same time, have sizable couplings to the standard-model particles. Consequently, a Kaluza-Klein tower of heavy neutrinos (N) can be produced and studied at the ILC through the process: e+e- -> vN followed by N -> Wl decay. We show that the single lepton plus two-jets final states with large missing energy from this signal process will provide a good opportunity to measure the masses and cross sections of Kaluza-Klein neutrinos up to the third level. Furthermore, the neutrino oscillation parameters can be extracted from the flavor dependence of the lowest-mode signals, which give us information about the origin of low-energy neutrino masses.
High-energy suppression of the Higgsstrahlung cross-section in the Minimal Composite Higgs Model
Katy Hartling; Heather E. Logan
2013-02-05T23:59:59.000Z
If the Higgs boson is composite, signs of this compositeness should appear via a formfactor-like suppression of Higgs scattering cross sections at momentum transfers above the compositeness scale. We explore this by computing the cross section for e+e- ---> ZH (Higgsstrahlung) in a warped five-dimensional gauge-Higgs unification model known as the Minimal Composite Higgs Model (MCHM). We observe that the Higgsstrahlung cross section in the MCHM is strongly suppressed compared to that in the Standard Model at center-of-mass energies above the scale of the first Kaluza-Klein excitations, due to cancellations among the contributions of successive Z boson Kaluza-Klein modes. We also show that the magnitude and sign of the coupling of the first Kaluza-Klein mode can be measured at a future electron-positron collider such as the proposed International Linear Collider or Compact Linear Collider.
Improved Bounds on Universal Extra Dimensions
Thomas Flacke
2006-05-13T23:59:59.000Z
We report on recent constraints on models with a flat ``universal'' extra dimension in which all Standard Model fields propagate in the bulk. A significantly improved constraint on the compactification scale is obtained from the extended set of electroweak precision observables accurately measured at LEP1 and LEP2. We find a lower bound of 1/R > 700 (800) GeV at the 99% (95%) confidence level. Comparison of this constraint with the relic density of Kaluza-Klein dark matter for the Minimal UED model points towards the necessity of including non-minimal boundary terms which motivates studying alternative Kaluza-Klein dark matter candidates. Results for the one-loop induced magnetic dipole moment for Kaluza-Klein neutrino dark matter are presented. This talk is based on Phys.Rev.D73:095002,2006 and hep-ph/0601161.
Acceleration of particles in Einstein-Maxwell-Dilaton black hole
Pu-Jian Mao; Ran Li; Lin-Yu Jia; Ji-Rong Ren
2011-03-08T23:59:59.000Z
It has been recently pointed out that, under certain conditions, the energy of particles accelerated by black holes in the center-of-mass frame can become arbitrarily high. In this Letter, we study the collision of two particles around the four-dimensional Kaluza-Klein black hole in Einstein-Maxwell-Dilaton theory. We find that the center-of-mass energy for a pair of colliding particles is unlimited at the horizon of charged nonrotating and extremal rotating Kaluza-Klein black hole.
U(1) gauge invariant noncommutative Schroedinger theory and gravity
Muthukumar, B. [Saha Institute of Nuclear Physics, 1/AF, Bidhan nagar, Kolkata-700 064 (India)
2005-05-15T23:59:59.000Z
We consider the complex, massive Klein-Gordon field living in the noncommutative space, and coupled to noncommutative electromagnetic fields. After employing the Seiberg-Witten map to first order, we analyze the noncommutative Klein-Gordon theory as c, which corresponds to the velocity of light, goes to infinity. We show that the theory exhibits a regular 'magnetic' limit only for certain forms of magnetic fields. The resulting theory is nothing but the Schroedinger theory in a gravitational background generated by the gauge fields.
Patterns of role-impairment among alcoholic workers
Goldstein, Carolyn Lesley Klein
1971-01-01T23:59:59.000Z
PATTERNS OF ROLE-INPAIRNENT ANi01'1G ALCOHOLIC WORKERS A Thesis by Carolyn Les1ey Klein Goldstein Submitted to the Graduate College of Texas A&N University ini partial fulfillment of the requirements for the dei-ree of NASTER OP SCIENCE Nay... 1971 Najor Su'oject: Sociology 0 R R, 8 PATTERNS OF ROLE-IMPAIRMENT AMONG ALCOHOLIC WORKERS A Thesis Jh '0 a Ql by Carolyn Lesley Klein Goldstein Approved as to style end content by: Chairman of Committee May 19/1 ABSTRACT Patterns...
Cho, Soochin; Huang, Zachary Y.; Green, Daniel R.; Smith, Deborah R.; Zhang, Jianzhi
2006-10-25T23:59:59.000Z
(Klein 1987; Hughes and Nei 1988; Takahata and Nei 1990; Takahata et al. 1992) and the self-incompatibility genes of flowering plants (Ioerger et al. 1990; Dwyer et al. 1991; Richman et al. 1996; Charlesworth and Awadalla 1998) and fungi (Wu et al. 1998... at the DNA sequence level in two biological systems: the major histo- compatibility complex (MHC) of jawed vertebrates (Klein 1987; Hughes and Nei 1988; Takahata and Nei 1990; Takahata et al. 1992) and the self-incompatibility (SI) system of angiosperms...
McCann, Maureen (Director, Center for Direct Catalytic Conversion of Biomass to Biofuels); C3Bio Staff
2011-11-03T23:59:59.000Z
'Moving from Petroleum to Plants to Energize our World' was submitted by the Center for Direct Catalytic Conversion of Biomass to Biofuels (C3Bio) to the 'Life at the Frontiers of Energy Research' video contest at the 2011 Science for Our Nation's Energy Future: Energy Frontier Research Centers (EFRCs) Summit and Forum. Twenty-six EFRCs created short videos to highlight their mission and their work. C3Bio, an EFRC directed by Maureen McCann at Purdue University is a partnership between five institutions: Purdue (lead), Argonne National Laboratory, National Renewable Energy Laboratory, Northeastern University, and the University of Tennessee. The Office of Basic Energy Sciences in the U.S. Department of Energy's Office of Science established the 46 Energy Frontier Research Centers (EFRCs) in 2009. These collaboratively-organized centers conduct fundamental research focused on 'grand challenges' and use-inspired 'basic research needs' recently identified in major strategic planning efforts by the scientific community. The overall purpose is to accelerate scientific progress toward meeting the nation's critical energy challenges.
that these asymmetries are particularly sensitive to the exchange of KaluzaÂKlein towers of gravitons, or other spinÂ2 of Energy, Contract DEÂAC03Â76SF00515 #12; 1 Introduction New Physics beyond the Standard Model (SM and asymmetries, which grow with increasing energy. This last possibility signals the existence of new physics
that these asymmetries are particularly sensitive to the exchange of KaluzaÂKlein towers of gravitons, or other spinÂ2 of Energy, Contract DEÂAC03Â76SF00515 #12; 1 Introduction New Physics beyond the Standard Model (SM and asymmetries, which grow with increasing energy. This last possibility signals the existence of new physics
Faculty Research Professor Jim Alexander
Cohen, Itai
interactions. But until we get enough data from very high energy collisions, we can't know what the right collecting data at 7-TeVcenter-of-mass energy -- high enough to begin to probe the crucial region where new rather similar, especially in LHC data. Will our initially very limited view up the Kaluza-Klein towers
J. Differential Equations 250 (2011) 690709 Contents lists available at ScienceDirect
Cheng, Bin
2011-01-01T23:59:59.000Z
J. Differential Equations 250 (2011) 690709 Contents lists available at ScienceDirect Journal rotating shallow water system Bin Cheng, Chunjing Xie Department of Mathematics, University of Michigan secondary 76N10, 35L60 Keywords: Rotating shallow water system Classical solutions Global existence Klein
Klein, Jacob
enrichment and of wetting A. Budkowski,a) F. Scheffold, and J. Klein Department of Materials and Interfaces model systems, surface enrichment from polymer blends has clear technological implications-same mixtures--surface enrichment characteristics of the air- surface preferred phases. In these binary pairs
Line geometry and electromagnetism III: groups of transformations
D. H. Delphenich
2014-04-16T23:59:59.000Z
The role of linear and projective groups of transformations in line geometry and electromagnetism is examined in accordance with Klein's Erlanger Programm for geometries. The group of collineations of real projective space is chosen as the most general group, and reductions to some of its various subgroups are then detailed according to their relevance to electromagnetic fields, and especially wave-like ones.
Transformaciones Sin duda, el concepto de funcin juega un papel fundamental en todas las ramas de
Aíza, Ricardo Gómez
, en el axioma "todos los ángulos rectos son iguales", en la palabra "iguales" se incluye la idea de aislamiento del concepto de función, la generalidad de la noción que englobaba cosas al parecer distantes imposible que lo aprecie. Pero el punto es que, de alguna manera, Klein dijo: para hacer geometría es
Waller Creek Urban Redevelopment
McDonald, S.
2013-01-01T23:59:59.000Z
;#8;#29; Marie Crane#0;#8;#29; Russell Douglass#0;#8;#29; Sue Edwards#0;#8;#29; Gary Farmer#0;#8;#29; Jeanne Klein#0;#8;#29; Teresa Long Eduardo Margain#0;#8;#29; Chris Mattsson Tom Meredith#0;#8;#29; Leslie Moore#0;#8;#29; Eva Muñoz#0;#8;#29; Erin Nelson#0...
Theory and Development of Near-field Plates Seyedmohammadreza Faghih Imani
Sarabandi, Kamal
Johnson, Michelle Chapman, Karen Liska, and Beth Stalnaker who have been of great assistance over the last, Ali Besharatian, Kara Moser, Jennifer Klein, Farhad Bayatpur, Ahmad iii #12;Beirami, Pooyan Amini, Meisam Razaviyayn, Ali Moayedi, and Pedram Radmanesh. You have been a wonderful source of support
Lenstra, Arjen K.
1 The JET Alfvén Eigenmode Local Manager for the real-time detection and tracking of a frequency,5 , A.Klein6 , P.Lavanchy1 , T.Panis1 , and JET-EFDA contributors JET-EFDA, Culham Science Centre, OX14, FR [3] Culham Centre for Fusion Energy, Culham Science Centre, Abingdon, UK [4] formerly: JET Joint
Impact of Low-Level Jets on the Nocturnal Urban Heat Island Intensity in Oklahoma City
Xue, Ming
Impact of Low-Level Jets on the Nocturnal Urban Heat Island Intensity in Oklahoma City XIAO-MING HU Center for Analysis and Prediction of Storms, University of Oklahoma, Norman, Oklahoma PETRA M. KLEIN AND MING XUE Center for Analysis and Prediction of Storms and School of Meteorology, University of Oklahoma
Integrable cases of gravitating static isothermal fluid spheres
B. V. Ivanov
2001-07-17T23:59:59.000Z
It is shown that different approaches towards the solution of the Einstein equations for a static spherically symmetric perfect fluid with a gamma-law equation of state lead to an Abel differential equation of the second kind. Its only integrable cases at present are flat spacetime, de Sitter solution and its Buchdahl transform, Einstein static universe and the Klein-Tolman solution.
An early date for cattle from Namaqualand, South Africa
An early date for cattle from Namaqualand, South Africa: implications for the origins of herding in southern Africa Jayson Orton1 , Peter Mitchell2 , Richard Klein3 , Teresa Steele4 & K. Ann Horsburgh5 When did cattle come to South Africa? Radiocarbon dates on a newly found cow horn indicates a time
Radiation reaction and quantum damped harmonic oscillator
F. Kheirandish; M. Amooshahi
2005-07-19T23:59:59.000Z
By taking a Klein-Gordon field as the environment of an harmonic oscillator and using a new method for dealing with quantum dissipative systems (minimal coupling method), the quantum dynamics and radiation reaction for a quantum damped harmonic oscillator investigated. Applying perturbation method, some transition probabilities indicating the way energy flows between oscillator, reservoir and quantum vacuum, obtained
Mining Induced Seismicity -Monitoring of a Large Scale Salt Cavern Collapse
Paris-Sud XI, Université de
Mining Induced Seismicity - Monitoring of a Large Scale Salt Cavern Collapse E. Klein* (Ineris), I ground failure phenomenon induced by old underground mining works, a field experiment was undertaken in collaboration with the SOLVAY mining company: a solution mine was instrumented in 2004 previously to its
Paris-Sud XI, Université de
for calibration of permanent microseismic early-warning systems I. Contrucci (1), E. Klein (1), P. Bigarré (1), A, microseismicity, early warning system, 3D location, velocity model 1. Introduction In the Lorraine area of Eastern-time microseismic monitoring systems are being installed. The objective is to detect remote rock mass fracturing
Dimensionality and the Cosmological Constant
Z. C. Wu
2006-05-01T23:59:59.000Z
In the Kaluza-Klein model with a cosmological constant and a flux, the external spacetime and its dimension of the created universe from a $S^s \\times S^{n-s}$ seed instanton can be identified in quantum cosmology. One can also show that in the internal space the effective cosmological constant is most probably zero.
15 JANUARY 2003 393M A J D A A N D K L E I N 2003 American Meteorological Society
Majda, Andrew J.
Multiscale Models for the Tropics ANDREW J. MAJDA Courant Institute of Mathematical Sciences, and Center for Atmosphere/Ocean Science, New York University, New York, New York RUPERT KLEIN FB Mathematik and Informatik that through complex in- teraction of heating and convection, tropical atmospher- ic flows are organized
Anderson, Paul R.
@wfu.edu Reynolda Documentary Film 2013-2015 Mark Hall hallma@wfu.edu Reynolda Bioethics 2013-2015 Michelle Roberts Documentary Film Chelsea Klein kleicl0@wfu.edu Reynolda English Andrew Kobin kobiaj9@wfu.edu Reynolda
Quantum dots and etch-induced depletion of a silicon two-dimensional electron gas
Coppersmith, Susan N.
Quantum dots and etch-induced depletion of a silicon two-dimensional electron gas L. J. Klein, K. L coupled quantum dots containing individual electrons whose spins act as qubits.4 We have made recent in a silicon quantum dot can be held constant for up to 11 hours. This fulfills an important milestone towards
64 INDUSTRIAL BIOTECHNOLOGY SPRING 2008 F E AT U R E C O M M E N TA RY
for energy to be produced from renewable resources, the contribution of Indiana's corn and soybean industry Isaac Slaven, Eva Haviarova, and Klein Ileleji Introduction s energy prices rise and there is a push and one to bioenergy. Sustainability Available wood residues can be broken into two major types: sus
Skadron, Kevin
and Sampling John W. Haskins, Jr. Kevin Skadron Department of Computer Science University of Virginia Charlottesville, VA 22904 fpredator,skadrong@cs.virginia.edu AJ KleinOsowski David J. Lilja Department of Electrical & Computer Engineering University of Minnesota 200 Union St. S.E. Minneapolis, MN 55455 fajko
A&A 486, 589596 (2008) DOI: 10.1051/0004-6361:20079228
California at Berkeley, University of
2008-01-01T23:59:59.000Z
magnetic flux tubes in the corona and the transport of solar energetic particles K.-L. Klein1, S. Krucker2 in the ecliptic plane suggests that the interplanetary field lines curve down to the ecliptic before reaching 1 AU of degrees in longitude even in simple impulsive particle events. In all events we studied, potential
Brain Topography, Volume 6, Number 1, 1993 79 Invertinga Laplacian TopographyMap
Klein, Stanley
Brain Topography, Volume 6, Number 1, 1993 79 Invertinga Laplacian TopographyMap StanleyA. Klein. An Excel spreadsheet implementation of the algorithm is presented. Key words: Topography; Laplacian; Inverse laplacian;Principal components. Introduction Many researchers who measure the topography of evoked
W.V.T. RUSCH ENGINEERING HONORS COLLOQUIUM SPRING 2009 SEMESTER
Zhou, Chongwu
6 CARMA- Observing our Universe with Millimeter Wave Eyes, Prof. Anneila I. Sargent, Benjamin M Research Laboratory, California Institute of Technology 13 Power to Change the World: Alternative Energy and the Rise of the Solar City, Dr. Suzanne Klein and Dr. Gani Ganapathi, Jet Propulsion Laboratory 20 Spring
Timelike reduction and T-duality
Scuro, Sante Rodolfo
1999-01-01T23:59:59.000Z
expressions for the Killing sailors in Anti-de Sitter spacetime of odd dimension with respect to the field reparametrization in the bosonic sector. In addition, we perform Kaluza-Klein reduction along the time direction of D = 10 type IIB theory to D = 9. Then...
Learning Programs: A Hierarchical Bayesian Approach
Pratt, Vaughan
Michael I. Jordan Dan Klein #12;Motivating Application: Repetitive Text Editing I like programs, but I #12;Motivating Application: Repetitive Text Editing I like programs, but I wish programs would just #12;Motivating Application: Repetitive Text Editing I like programs, but I wish programs would just
Path Integrals and Lorentz Violation in Polymer Quantized Scalar Fields
Nirmalya Kajuri
2014-07-01T23:59:59.000Z
We obtain a path integral formulation of polymer quantized scalar field theory, starting from the Hilbert Space framework. This brings the polymer quantized scalar field theory under the ambit of Feynman diagrammatic techniques. The path integral formulation also shows that Lorentz invariance is lost for the Klein-Gordon field.
MATTHEW D. SHAPIRO Department of Economics home
Cafarella, Michael J.
MATTHEW D. SHAPIRO Department of Economics home: University of Michigan 2024 Vinewood Blvd Ann@umich.edu PRINCIPAL CURRENT POSITIONS Lawrence R. Klein Collegiate Professor of Economics, University of Michigan of Economic Research Editor, American Economic Journal: Economic Policy EDUCATION B.A. summa cum laude
Ryan, Michael J.
of robotics in animal behaviour RYAN C. TAYLOR*, BARRETT A. KLEIN, JOEY STEIN & MICHAEL J. RYAN§ *Science pustulosus; robotics; sexual selection; tu´ngara frog; visual cue A long-standing interest in animal (Tinbergen & Perdeck 1950; Searcy 1998; McLister 2003), manually controlled robots (Brown & Kiely 1974
Meeting of the CCSM Scientific Steering Committee Eldorado Hotel, Santa Fe, New Mexico
.) Process-oriented Modeling of the Physical Climate System - Significant biases in CCSM3 controls (BillMeeting of the CCSM Scientific Steering Committee Eldorado Hotel, Santa Fe, New Mexico Anasazi) - Parameterization methodologies (Leo Donner/Steve Klein) - Coupled Chemistry/Climate Modeling - WACCM (Byron Boville
Bose-Einstein Condensation in Compactified Spaces
Kiyoshi Shiraishi
2012-11-26T23:59:59.000Z
We discuss the thermodynamic potential of a charged Bose gas with the chemical potential in arbitrary dimensions. The critical temperature for Bose-Einstein condensation is investigated. In the case of the compactified background metric, it is shown that the critical temperature depends on the size of the extra spaces. The asymmetry of the "Kaluza-Klein charge" is also discussed.
CONFERENCE OF THE SOUTH AFRICAN SOCIETY FOR PLANT PATHOLOGY
THE 48TH CONFERENCE OF THE SOUTH AFRICAN SOCIETY FOR PLANT PATHOLOGY Prepared by Arista Fourie The South African Society for Plant Pathology held their 48th conference at the scenic ATKV, Klein Kariba as quarantine regulations. The conference was attended by about 160 members representing regions
PHYSICAL REVIEW B 84, 195428 (2011) Semiclassical magnetotransport in graphene n-p junctions
Ullmo, Denis
2011-01-01T23:59:59.000Z
PHYSICAL REVIEW B 84, 195428 (2011) Semiclassical magnetotransport in graphene n- p junctions n-p junctions in the quantum Hall regime. This framework is known to experimentally exhibit, creating a n-p junction at the regions' interface, an ideal setup to study Klein tunneling. Using a strong
ANALYSIS OF SHORT-TERM SOLAR RADIATION DATA Gayathri Vijayakumar
Wisconsin at Madison, University of
ANALYSIS OF SHORT-TERM SOLAR RADIATION DATA Gayathri Vijayakumar Sanford A. Klein William A beckman@engr.wisc.edu ABSTRACT Solar radiation data are available for many locations on an hourly basis annual performance, although solar radiation can exhibit wide variations during an hour. Variations
JavaKollektionen Java Collection Framework
SchÃ¼rmann, Michael
459 JavaKollektionen Java Collection Framework Bereitstellung wichtiger Kollektionen (Listen Implementierung hÃ¤ufig benutzter Algorithmen (Suchen, Sortieren, kleines/grÃ¶Ã?tes Element, ...) Basis: java.util.Collection #12;460 Schnittstelle fÃ¼r alle Kollektionsklassen (1) Schnittstelle java.util.Collection GrÃ¶Ã?e der
Arndt, Holger
20 Kombination von C++ und Java 20.1 Java Native Interface (JNI) 20-3 (364) 20.1 Java Native Interface (JNI) Der Standardweg zur Kombination von C++ und Java ist das Java Native Interface (JNI), das Bestandteil des JDK ist. 20.1.1 C++-Funktionen aus Java aufrufen Â· Gegeben sei die folgende kleine C
Arndt, Holger
20 Kombination von C++ und Java 20.1 Java Native Interface (JNI) 20-3(378) 20.1 Java Native Interface (JNI) Der Standardweg zur Kombination von C++ und Java ist das Java Native Interface (JNI), das Bestandteil des JDK ist. 20.1.1 C++-Funktionen aus Java aufrufen Â· Gegeben sei die folgende kleine C
Arndt, Holger
20 Kombination von C++ und Java 20.1 Java Native Interface (JNI) 20-3 (360) 20.1 Java Native Interface (JNI) Der Standardweg zur Kombination von C++ und Java ist das Java Native Interface (JNI), das Bestandteil des JDK ist. 20.1.1 C++-Funktionen aus Java aufrufen Â· Gegeben sei die folgende kleine C
The hydrino and other unlikely states
Norman Dombey
2006-08-08T23:59:59.000Z
We discuss the tightly bound (hydrino) solution of the Klein-Gordon equation for the Coulomb potential in 3 dimensions. We show that a similarly tightly bound state occurs for the Dirac equation in 2 dimensions. These states are unphysical since they disappear if the nuclear charge distribution is taken to have an arbitrarily small but non-zero radius.
On the hydrino state of the relativistic hydrogen atom
Jan Naudts
2005-08-05T23:59:59.000Z
The Klein-Gordon equation of the hydrogen atom has a low-lying eigenstate, called hydrino state, with square integrable wavefunction. The corresponding spinor solution of Dirac's equation is not square integrable. For this reason the hydrino state has been rejected in the early days of quantum mechanics as being unphysical. Maybe it is time to change opinion.
Orthogonality criterion for banishing hydrino states from standard quantum mechanics
Antonio S. de Castro
2007-04-30T23:59:59.000Z
Orthogonality criterion is used to shown in a very simple and general way that anomalous bound-state solutions for the Coulomb potential (hydrino states) do not exist as bona fide solutions of the Schr\\"{o}dinger, Klein-Gordon and Dirac equations.
On the hydrino state of the relativistic hydrogen atom
Naudts, J
2005-01-01T23:59:59.000Z
The Klein-Gordon equation of the hydrogen atom has a low-lying eigenstate, called hydrino state, with square integrable wavefunction. The corresponding spinor solution of Dirac's equation is not square integrable. For this reason the hydrino state has been rejected in the early days of quantum mechanics as being unphysical. Maybe it is time to change opinion.
The hydrino and other unlikely states
Dombey, N
2006-01-01T23:59:59.000Z
We discuss the tightly bound (hydrino) solution of the Klein-Gordon equation for the Coulomb potential in 3 dimensions. We show that a similarly tightly bound state occurs for the Dirac equation in 2 dimensions. These states are unphysical since they disappear if the nuclear charge distribution is taken to have an arbitrarily small but non-zero radius.
Orthogonality criterion for banishing hydrino states from standard quantum mechanics
de Castro, Antonio S
2007-01-01T23:59:59.000Z
Orthogonality criterion is used to shown in a very simple and general way that anomalous bound-state solutions for the Coulomb potential (hydrino states) do not exist as bona fide solutions of the Schr\\"{o}dinger, Klein-Gordon and Dirac equations.
Long-lived tendrils viscous entrainment
Gardel, Margaret
Long-lived tendrils in viscous entrainment Wendy W. Zhang Laura E. Schmidt* Physics & James Franck entrained by warm upwards flow in thermal boundary layer ·Entrainment stabilizes upwards flow Kumagai et al-layer liquid entrained as steady spout Cohen & Nagel 2002 Phys. Rev. Lett. Cohen 2004 Phys. Rev. E Kleine
Radiatively Driven Stellar Winds and Aspherical Mass Stan Owocki
Owocki, Stanley P.
(Castor, Abbott, and Klein 1975) model for radiative driving by scattering in a ensemble of lines from driving, foÂ cussing first on the standard CAK formalism for steady, lineÂdriven stellar winds, University of Delaware, Newark, DE 19716 Abstract. The high luminosity of massive stars can drive substantial
Radiatively Driven Stellar Winds and Aspherical Mass Stan Owocki
Owocki, Stanley P.
(Castor, Abbott, and Klein 1975) model for radiative driving by scattering in a ensemble of lines from driving, fo- cussing first on the standard CAK formalism for steady, line-driven stellar winds, University of Delaware, Newark, DE 19716 Abstract. The high luminosity of massive stars can drive substantial
Assignments Assignment sheets are made available on the course website
Winkel, Matthias
examination on survival models. In some places, the approach is more practically oriented and often placed and D. Oakes: Analysis of Survival Data. Chapman & Hall (1984) This is the classical text on survival for lifetime distributions. The remainder combines the ideas with the interest rate theory of BS4a. Klein
Freshman has GOP abuzz with talk of 2012 South Floridian a tea party darling
Fernandez, Eduardo
Freshman has GOP abuzz with talk of 2012 South Floridian a tea party darling By Sean Lengell candidate next year. Even a "West for president" movement has spread among conservative tea party supporters the retired Army lieutenant colonel defeated Democratic incumbent Ron Klein and became a nationwide tea party
Amplitude of Coulomb scattering for charged scalar field in de Sitter spacetime
Crucean Cosmin
2015-04-16T23:59:59.000Z
The scattering of a charged scalar field on Coulomb potential is studied using solutions of the Klein-Gordon equation which have a definite momentum. One obtains that in contrast with what happens on Minkowski case the modulus of momentum is not conserved in the scattering process on de Sitter space.
CDF/ANAL/TOP/PUBLIC/10048 version 1.0
Quigg, Chris
mechanisms such as Z bosons or Kaluza-Klein gluons. In the standard model, top quarks decay weakly before any are the numbers of opposite and same helicity events [3]. This analysis measures fo by fitting the helicity angle CDF measurement [5] uses kinematic reconstruction in the dilepton sample to find the lepton and b
Müller, Dietmar
& Johnson 2001). Up to eleven different mechanisms are listed by Klein (1995) to explain the cause crustal and lithospheric structure data of intracontinental basins extracted from our global analysis data. Secondly, the crustal structure of these basins is put into a plate kinematic and geodynamic
Kunstmatige Intelligentie (AI) Hoofdstuk 4.1.4 van Russell/Norvig = [RN
Kosters, Walter
10001000100 01101011001 9 #12;AI--Genetische algoritmen Mutatie Bij mutatie wordt elke bit van een individu met een zekere (kleine) kans, de mutation rate, omgeklapt. Een andere optie is om van elk individu een potenti¨ele oplossing, bij- voorbeeld met een "hill-climber". 10 #12;AI--Genetische algoritmen Voorbeeld
ABP1 Mediates Auxin Inhibition of Clathrin-Dependent
Jones, Alan M.
,1,2,11 Ju¨ rgen Kleine-Vehn,1,2,11 Elke Barbez,1,2 Michael Sauer,1,2,12 Tomasz Paciorek,1,2 Pawel and Pharmacology, University of North Carolina, Chapel Hill, NC 27599, USA 9Institute for Applied Genetics and Cell
Geometrical Methods in Gauge Theory
Henrique de A. Gomes
2006-10-25T23:59:59.000Z
In this work we explore the geometrical interpretation of gauge theories through the formalism of fiber bundles. Moreover, we conduct an investigation in the topology of fiber bundles, providing a proof of the Classification Theorem. In the last chapter we present some applications, such as electromagnetism and generalized Kaluza-Klein Theory.
The branching programme of mouse lung development
Klein, Ophir
ARTICLES The branching programme of mouse lung development Ross J. Metzger1 {, Ophir D. Klein2 {, Gail R. Martin2 & Mark A. Krasnow1 Mammalian lungs are branched networks containing thousands by three geometrically simple local modes of branching used in three different orders throughout the lung
Design and Simulation of a Boron-loaded Neutron Spectrometer
Martin, Thomas
2012-10-19T23:59:59.000Z
(Fowler and Brolley 1956; Brooks and Klein 2002; Zhang et al. 2003). The complex pulse height spectra of such detectors must be unfolded with cross section information to obtain interpretable response information (Pichenot et al. 2002; Thomas 2010... ...................................................................... 7 1.2.2 Threshold Reactions ........................................................... 14 1.2.3 Multisphere Detectors ........................................................ 15 1.2.4 Other Methods...
Sliding Friction with Polymer Brushes Rafael Tadmor,* Joanna Janik,
Klein, Jacob
Sliding Friction with Polymer Brushes Rafael Tadmor,* Joanna Janik, and Jacob Klein Department) Using high-resolution shear force measurements, we examine in detail the frictional drag between rubbing characteristic of kinetic friction. This has a very weak velocity dependence, attributed to chain moieties
Management and Accounting The Jesse H. Jones Graduate School of Management
Richards-Kortum, Rebecca
Cording Utpal Dholakia Jill Foote Gustavo Grullon Michael B. Heeley Lisa R. Klein Sharon F. Matusik Thomas Marie Ainsworth Paul S. Allen Stephen J. Banks Marc Boom Cheyenne Currall Rodney Eads Jerry E. Finger Lawrence Hampton John Kehoe Pamela Kennedy Steven F. Koch Pilar Llusa James P. Mandel Dennis E. Murphree
Lehmann, Johannes
), Potchefstroom, South Africa 13 Secretariat DesertNet International (DNI), c/o Biocentre Klein Flottbek and Innovation, Industry and Investment NSW, PO Box 100, Beecroft, NSW, Australia 3 Unit Transition Energy objectives, drivers, actions, policies and time horizons are crucial. Once these issues are transparent
Emission of scalar particles from cylindrical black holes
H. Gohar; K. Saifullah
2011-09-27T23:59:59.000Z
We study quantum tunneling of scalar particles from black strings. For this purpose we apply WKB approximation and Hamilton-Jacobi method to solve the Klein-Gordon equation for outgoing trajectories. We find the tunneling probability of outgoing charged and uncharged scalars from the event horizon of black strings, and hence the Hawking temperature for these black configurations.
Timelike reduction and T-duality
Scuro, Sante Rodolfo
1999-01-01T23:59:59.000Z
expressions for the Killing sailors in Anti-de Sitter spacetime of odd dimension with respect to the field reparametrization in the bosonic sector. In addition, we perform Kaluza-Klein reduction along the time direction of D = 10 type IIB theory to D = 9. Then...
Comparison Between Different Numerical Methods for Discretization of PDEs - A Short Review
Mehra, Mani; Patel, Nutan; Kumar, Rahul [Indian Institute of Technology Delhi, Hauz Khas, New Delhi-110116 (India)
2010-09-30T23:59:59.000Z
We compare three well known methods for solving the PDEs such as Finite Difference Method (FDM), Spectral Method, Wavelet Galerkin Method (WGM). We test all these methods on Advection Equation and Klein-Gordon Equation. We plot comparison and error graphs using MATLAB.
ADVANCED OPTICS II, PHYC/ECE 554, UNM Spring 2009 Instructor: Mani Hossein-Zadeh
New Mexico, University of
ADVANCED OPTICS II, PHYC/ECE 554, UNM Spring 2009 Instructor: Mani Hossein-Zadeh Office hour book: "Introduction to Optics", 3rd edition. F.L. Pedrotti, L.S. Pedrotti, L.M. Pedrotti Other references: 1-"Introdution to Fourier Optics", Joseph W. Goodman, 3rd edition. 2-"Optics", Miles V. Klein
Paris-Sud XI, Université de
CAMI-AFT: A SCIENTIFIC FIELD EXPERIMENT TO CALIBRATE REAL-TIME MONITORING SYSTEMS DEDICATED the source energy to the sensor energy. KEYWORDS: Microseismic monitoring, Post-mining risks. RESUME : les TO THE MANAGEMENT OF POST-MINING RISKS CONTRUCCI Isabelle1 , KLEIN Emmanuelle1 , BIGARRE Pascal1 , LIZEUR Armand1
Lobachevsky geometry of (super)conformal mechanics
Tigran Hakobyan; Armen Nersessian
2008-03-15T23:59:59.000Z
We give a simple geometric explanation for the similarity transformation mapping one-dimensional conformal mechanics to free-particle system. Namely, we show that this transformation corresponds to the inversion of the Klein model of Lobachevsky space (non-compact complex projective plane). We also extend this picture to the N=2k superconformal mechanics described in terms of Lobachevsky superspace.
SST spatial anisotropic covariances from METOP-AVHRR data
Boyer, Edmond
of SST data to track, characterize and reconstruct mesoscale dynamics (cf. Klein et al. (2009); Isern et and modeling of mesoscale SST variability appears crucial to provide interpolation priors. The temporal)). However, to our knowledge, no study has explored thor- oughly at a global-scale these mesoscale spatial
A Comprehensive Analysis of MicroProteins Reveals Their Potentially Widespread Mechanism of
of Transcriptional Regulation1[W] Enrico Magnani*, Niek de Klein, Hye-In Nam, Jung-Gun Kim, Kimberly Pham, Elisa thaliana) using a bioinformatics pipeline and validated two novel miPs involved in flowering time. Overall, we reveal a prominent layer of transcriptional regulation by miPs, show pervasiveness
Program Thursday, March 10, 2011 UNIVERSITY of DELAWARE
Firestone, Jeremy
.m. Welcome - UDEI Michael Klein - Director, UD Energy Institute UD Perspective on Energy Mark Barteau, Institute of Energy Conversion 11:15 a.m. Solar Hydrogen Robert Opila - Professor, Materials ScienceProgram Thursday, March 10, 2011 UNIVERSITY of DELAWARE Energy Institute Annual Symposium www.energy
Boyer, Edmond
GRADIENTS IN PLASTICALLY DEFORMED NIOBIUM SINGLE CRYSTALS H.U. Habermeier, W. Klein and H. Kronmiiller de Shubnikov dans des monocristaux d niobium dGformds plastiquement. L'anisotropie de l'inter- action of the Faraday magneto-optical technique the penetration of the Shubnikov phase into plastically deformed niobium
Pofahl, Geoffrey Michael
2007-04-25T23:59:59.000Z
In the words of Joel I. Klein, former Assistant Attorney General of the United States, Ã¢Â?Â?[a]ntitrust enforcement in the merger area has never been as time-consuming, complex, or as central to the functioning of our ...
The Human Cost THE RECENT ARTICLES ON THE LEGACY OF THE
Page, Roderic
that significant hurdles remain in Russia's attempt to decommission submarines and store nuclear waste. He also. SPENCER KLEIN Nuclear Science Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley of public funds. If high- energy physics had the obvious importance to the public that health care, medicine
Gauge-invariant metric fluctuations from NKK theory of gravity: de Sitter expansion
Jose Edgar Madriz Aguilar; Mariano Anabitarte; Mauricio Bellini
2005-10-20T23:59:59.000Z
In this paper we study gauge-invariant metric fluctuations from a Noncompact Kaluza-Klein (NKK) theory of gravity in a de Sitter expansion. We recover the well known result $\\delta\\rho/\\rho \\simeq 2\\Phi$, obtained from the standard 4D semiclassical approach to inflation. The spectrum for these fluctuations should be dependent of the fifth (spatial-like) coordinate.
Paris-Sud XI, Université de
, and possible cooling schemes, e.g. introduc- ing a tri-ring system with fast laser cooling in the cen- tral, PSI, Villigen, Switzerland; M. Klein, U. Liverpool, UK Abstract The full physics program of a future/deceleration cycles, and by cool- ing them, e.g., with a compact tri-ring scheme or a con- ventional damping ring
New sensitivity analysis subordinated to a Jean-Claude Fort
Boyer, Edmond
, Sobol indices Introduction From more than one decade, uncertainty propagation and sensitivity analysisNew sensitivity analysis subordinated to a contrast Jean-Claude Fort , Thierry Klein , Nabil Rachdi May 8, 2013 Abstract In a model of the form Y = h(X1, . . . , Xd) where the goal is to es- timate
Centrifugal deformations of the gravitational kink
Paolo Maraner; Jiannis K. Pachos
2008-11-29T23:59:59.000Z
The Kaluza-Klein reduction of 4d conformally flat spacetimes is reconsidered. The corresponding 3d equations are shown to be equivalent to 2d gravitational kink equations augmented by a centrifugal term. For space-like gauge fields and non-trivial values of the centrifugal term the gravitational kink solutions describe a spacetime that is divided in two disconnected regions.
Elmer C. Easton '31 '33G '65H ++ Edgar H. Howells '34 '68P* ++
Napier, Terrence
1931 Elmer C. Easton '31 '33G '65H ++ 1934 Edgar H. Howells '34 '68P* ++ A. William Lubbers '34 ++ Edgar F. Whitmore, Jr. '40 ++ 1941 John B. Atherholt '41 '08GP ++ John P. Beal, Jr. '41 ++ Frederick C. Edward Klein '42 ++ Richard M. Luckring '42* Edgar K. Muhlhausen '42 '48G John T. Ransom II '42* David E
Probing Large Extra Dimensions With IceCube
Arman Esmaili; O. L. G. Peres; Zahra Tabrizi
2014-12-02T23:59:59.000Z
In models with Large Extra Dimensions the smallness of neutrino masses can be naturally explained by introducing gauge singlet fermions which propagate in the bulk. The Kaluza-Klein modes of these fermions appear as towers of sterile neutrino states on the brane. We study the phenomenological consequences of this picture for the high energy atmospheric neutrinos. For this purpose we construct a detailed equivalence between a model with large extra dimensions and a (3 + n) scenario consisting of three active and n extra sterile neutrino states, which provides a clear intuitive understanding of Kaluza-Klein modes. Finally, we analyze the collected data of high energy atmospheric neutrinos by IceCube experiment and obtain bounds on the radius of extra dimensions.
Evolution of the CPT Invariance into a Basic Postulate in Physics
Guang-jiong Ni; Suqing Chen; Jianjun Xu
2012-07-23T23:59:59.000Z
Einstein-Podolsky-Rosen's paper in 1935 is discussed in parallel with an EPR experiment on $K^0\\bar{K}^0$ system in 1998, yielding a strong hint of distinction in both wave-function and operators between particle and antiparticle at the level of quantum mechanics (QM). Then it is proposed that the CPT invariance in particle physics leads naturally to a basic postulate that the (newly defined) space-time inversion (${\\bf x}\\to -{\\bf x},t\\to -t$) is equivalent to the transformation between particle and its antiparticle. The evolution of this postulate from nonrelativistic QM via relativistic QM till the quantum field theory is discussed in some detail. The Klein paradox for both Klein-Gordon equation and Dirac equation is also discussed. Keywords: CPT invariance, Antiparticle, Quantum mechanics, Quantum field theory
Jussi Ilmari Lindgren
2013-02-13T23:59:59.000Z
This paper defines an equation for causality. This equation is then combined with the postulates of quantum mechanics and mass-energy equivalence to produce a quantum mechanical telegrapher's equation and to reproduce the Schrodinger and Klein-Gordon equations. The incompressible Navier-Stokes equations and dynamic general equilibrium in economics (with an interpretation of a Nash equilibrium) are obtained when the equation of causality refers to itself, i.e. when the cause is its own effect. As it is shown that the Klein-Gordon equation is obtained by Wick rotating the cause vector with de Broglie angular frequency, this paper postulates an equation for Quantum Gravity, which relates the Navier-Stokes equations to the Einstein Field Equations of General Relativity.
Dirac equation in low dimensions: The factorization method
J. A. Sanchez-Monroy; C. J. Quimbay
2014-09-30T23:59:59.000Z
We present a general approach to solve the (1+1) and (2+1)-dimensional Dirac equation in the presence of static scalar, pseudoscalar and gauge potentials, for the case in which the potentials have the same functional form and thus the factorization method can be applied. We show that the presence of electric potentials in the Dirac equation leads to a two Klein-Gordon equations including an energy-dependent potential. We then generalize the factorization method for the case of energy-dependent Hamiltonians. Additionally, the shape invariance is generalized for a specific class of energy-dependent Hamiltonians. We also present a condition for the absence of the Klein's paradox (stability of the Dirac sea), showing how Dirac particles in low dimensions can be confined for a wide family of potentials.
A Study of Lead Ingot Cargoes from Ancient Mediterranean Shipwrecks
Brown, Heather Gail
2011-10-21T23:59:59.000Z
to the many scholars who kindly shared their knowledge and their work with me over the years, including Susan Katzev, Mark Polzer, Dr. Nancy Klein, Dr. Marcus Hermanns, Dr. Irina Radic-Rossi, Dr. Marie-Pierre J?z?gou, Dr. Wendy van Duivenvoorde, and Dr... .................................................................................................. 154 Table 5.9 Non-imperial mold marks from lead ingots of the Imperial period from Appendix A. ............................................................................... 157 Table B.1 Known lead ingots with an inscription containing...
Dilatonic effects near naked singularities
J. R. Morris
2011-11-03T23:59:59.000Z
Static spherically symmetric solutions of 4d Brans-Dicke theory include a set of naked singularity solutions. Dilatonic effects near the naked singularities result in either a shielding or an antishielding effect from intruding massive test particles. One result is that for a portion of the solution parameter space, no communication between the singularity and a distant observer is possible via massive particle exchanges. Kaluza-Klein gravity is considered as a special case.
Sudden singularities survive massive quantum particle production
J. D. Barrow; A. B. Batista; G. Dito; J. C. Fabris; M. J. S. Houndjo
2012-06-28T23:59:59.000Z
We solve the Klein-Gordon equation for a massive, non-minimally coupled scalar field, with a conformal coupling, undergoing cosmological evolution from a radiation-dominated phase to a future sudden singularity. We show that, after regularisation, the energy of the created particles is zero and the back-reaction from quantum effects does not change the evolution of the universe near the future singularity and cannot prevent the finite-time sudden singularity.
ST 745{001: Analysis of Survival Data Spring, 2005
Zhang, Daowen
ST 745{001: Analysis of Survival Data Spring, 2005 Textbook 1. Survival Analysis: Techniques://www.biostat.mcw.edu/homepgs/klein/book.html contains some data sets and SAS macros used in the book) 2. Survival Analysis Using The SAS System: A Practical Guide by Paul D. Allison (data sets and macros used in the book can be found from http://www.sas
Meloncon, Brenda
2012-10-19T23:59:59.000Z
to act in loco parentis, meaning the teachers are not only responsible for the student?s education but act as parents in the parents' absence (Lee,1999). Kozol (1992) chronicled the plight of urban students and the schools they attend, describing... teachers (Billingsley & Tomchinm, 1992; Mastropieri, 2001). Billingsley, Carlson, and Klein (2004) suggest that about 33% of new special education teachers believe that they lack the materials necessary to deliver quality education to special needs...
Time delayed processes in physics, biophysics and archaeology
Magdalena Anna Pelc
2007-05-31T23:59:59.000Z
The motion of particles, where the particles: electrons, ions in microtubules or migrated peoples can be described as the superposition of diffusion and ordered waves. In this paper it is shown that the master equation for transport processes can be formulated as the time delayed hyperbolic partial equation. The equation describes the processes with memory. For characteristic times shorter than the relaxation time the master equation is the generalized Klein - Gordon equation. Key words: hyperbolic transport, microtubules, heat waves, Neolithic migration
Baltazar-Cervantes, J. C.; Gilman, D.; Haberl, J. S.; Culp, C.
2005-01-01T23:59:59.000Z
subdivision level. According to this TCEQ guidance, energy efficiency, renewable energy and no-emission distributed generation strategies that may be considered for inclusion as SIP measures include, among others, the Local Distributed Generation Solar... of Wisconsin for the U.S. Department of Energy (Klein and Beckman, 1983). METHODOLOGY To calculate NOx emissions from the installation of solar energy systems, two analyses were created: one procedure for calculating annual and peak-day 8 electricity...
Noncommutative relativistic particles
Amorim, Ricardo; Ramirez, Walberto Guzman [Instituto de Fisica, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, 21945-970, Rio de Janeiro (Brazil); Abreu, Everton M. C. [Grupo de Fisica Teorica e Matematica Fisica, Departamento de Fisica, Universidade Federal Rural do Rio de Janeiro, BR 465-07, 23890-970, Seropedica, Rio de Janeiro (Brazil)
2010-05-15T23:59:59.000Z
We present a relativistic formulation of noncommutative mechanics where the object of noncommutativity {theta}{sup {mu}{nu}}is considered as an independent quantity. Its canonical conjugate momentum is also introduced so that it permits one to obtain an explicit form for the generators of the extended Poincare group in the noncommutative case. The theory, which is invariant under reparametrization, generalizes recent nonrelativistic results. Free noncommutative bosonic particles satisfy an extended Klein-Gordon equation depending on two parameters.
Blurring boundaries: shifting perceptions of femininity in the context of the English Civil War
Scamardo, Tara Marie
2009-06-02T23:59:59.000Z
, History, and Theory (Chicago, 1984). 11 Ibid, 6. 12 Ibid, xx. 13 Susan Amussen, An Ordered Society: Gender and Class in Early Modern England (New York, 1988). Joy Wiltenburg, Disorderly Women and Female Power in the Street Literature of Early... and man-made, without a substance of truth. 20 Gender not only played a large role in conceptions of a hierarchical social order, it also helped individuals understand their personal place within the world. As Joan Larsen Klein so bluntly yet...
A. Jadbabaie PhD 2001, Caltech
Plotkin, Joshua B.
A. Jadbabaie PhD 2001, Caltech J.C. Doyle PhD 1984,Berkeley D.E. Sarason PhD 1963, Michigan P. R. Halmos PhD 1938, UIUC J.L. Doob PhD 1932, Harvard J. L. Walsh PhD 1920, Harvard M. Bocher PhD 1891, Gottingen G. Birkhoff PhD 1907, Chicago C.F. Klein, PhD RheinischeFriedrich Wilhelms Universität Bonn 1868 J
Trace Element Analysis At Central Nevada Seismic Zone Region (Coolbaugh, Et
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Trace Element Analysis At Long Valley Caldera Geothermal Area (Klusman &
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Trace Element Analysis At Northern Basin & Range Region (Coolbaugh, Et Al.,
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Trace Element Analysis At Nw Basin & Range Region (Coolbaugh, Et Al., 2010)
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Trace Element Analysis At Roosevelt Hot Springs Area (Christensen, Et Al.,
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Trace Element Analysis At Socorro Mountain Area (Owens, Et Al., 2005) |
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Trace Element Analysis At Walker-Lane Transitional Zone Region (Coolbaugh,
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Trace Element Analysis | Open Energy Information
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Tracer Testing At Dixie Valley Geothermal Area (Reed, 2007) | Open Energy
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Tracer Testing At Fenton Hill HDR Geothermal Area (Callahan, 1996) | Open
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Tracer Testing at Dixie Valley, Nevada, Using Pyrene Tetrasulfonate Amino
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Tracer testing in geothermal reservoirs | Open Energy Information
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Tracers and Tracer Interpretation | Open Energy Information
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Tracy Biomass Biomass Facility | Open Energy Information
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Tracy Biomass Facility | Open Energy Information
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TradeWind Energy LLC | Open Energy Information
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Trafford, Pennsylvania: Energy Resources | Open Energy Information
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Trail Canyon Geothermal Project | Open Energy Information
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Traill County, North Dakota: Energy Resources | Open Energy Information
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Training Manual for Micro, Small and Medium Entrepreneurs in Energy
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Training Manual for Senior and Middle Level Managers in Energy Financing |
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Trans India Acquisition Corporation | Open Energy Information
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Trans Tech Green Power | Open Energy Information
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Establishing Chlamydomonas reinhardtii as an industrial biotechnology host
Scaife, Mark A.; Nguyen, Ginnie T.D.T.; Rico, Juan; Lambert, Devinn; Helliwell, Katherine E.; Smith, Alison G.
2015-03-08T23:59:59.000Z
products such as biofuels, provides the opportunity to avoid a number of environmental factors that currently affect biofuel produc- tion from crop plants (Chisti, 2007). These include issues surrounding land and (fresh)water usage, mono-culture, crop... economically viable (Klein- Marcuschamer et al., 2013). For example, in dense cultures required for industrial cultivation, light capture is limited. Reduction of the light-harvesting apparatus reduces light absorption per cell, increasing penetration...
Foundation of Hydrodynamics of Strongly Interacting Systems
Wong, Cheuk-Yin [ORNL] [ORNL
2014-01-01T23:59:59.000Z
Hydrodynamics and quantum mechanics have many elements in common, as the density field and velocity fields are common variables that can be constructed in both descriptions. Starting with the Schroedinger equation and the Klein-Gordon for a single particle in hydrodynamical form, we examine the basic assumptions under which a quantum system of particles interacting through their mean fields can be described by hydrodynamics.
Captulo 11 Equacoes Diferenciais Ordinarias. Uma Introducao
Barata, JoÃ£o Carlos Alves
as leis do Eletromagnetismo (equaâ?ºcâ?oes de Maxwell), da Mecâ??anica dos Fluidos (equaâ?ºcâ?oes de Euler e de as leis da Fâ??ï¿½sica se expressam. Um exemplo bâ??asico â??e a segunda lei de Newton da Mecâ??anica Clâ??assica, que NavierÂStokes), da Mecâ??anica Quâ??antica (equaâ?ºcâ?oes de SchrË?odinger, de KleinÂGordon e de Dirac), da
Successes in School Energy Management - Energy Monitoring
Corbitt, C.
2012-01-01T23:59:59.000Z
Successes in School Energy Management ? Energy Monitoring Chad Corbitt, CEM, ATEM Energy Manager, Klein ISD jcorbitt1@kleinisd.net Wednesday, October 10, 2012 Keys to Energy Monitoring ? Develop an Energy Monitoring plan ? Define... the why, what, how and who of the plan ? Implement the Energy Monitoring plan ? Personnel, data system, reporting ? One Experience in Energy Monitoring Developing an Energy Monitoring Plan ? Why do we need to monitor energy? ? What information...
Haberl, J. S.; Cho, S.
2004-01-01T23:59:59.000Z
system, and Evans (1978; 1981) who developed a hybrid photovoltaic/thermal models and a simplified procedure for predicting long-term monthly average output from a photovoltaic array. The work of Siegel and Evans was extended by Clark et al. (1983... hybrid photovoltaic/thermal component models. Ref. by Siegel et al. (1981), Evans (1981), Klein & Beckman (1983), and Clark et al. (1984) Siegel et al. - 1981 Siegel et al. developed a method for estimating the monthly-average conventional energy...
Entropy evolution in warm inflation from a 5D vacuum
Jesus Martin Romero; Mauricio Bellini
2009-12-15T23:59:59.000Z
Using some ideas of Modern Kaluza-Klein theory, we examine the evolution of entropy on a 4D Friedmann-Robertson-Walker (FRW) brane from a 5D vacuum state, which is defined on a 5D background Riemann-flat metric. We found that entropy production is sufficiently important during inflation: $S > 10^{90}$, for all the initial values of temperature $T_0 < T_{GU}$.
Dynamics and Bifurcations Reading: Section 8.6
Beer, Randall D.
Dynamics and Bifurcations on a Torus Reading: Section 8.6 #12;IU/COGS-Q580/Beer Two-Dimensional Surfaces Sphere Torus Plane Cylinder Möbius Strip Klein Bottle Double Torus #12;IU/COGS-Q580/Beer Dynamical Consequences of Topology #12;IU/COGS-Q580/Beer Pairs of Oscillators Live on a Torus 1 2 1 2 #12;IU/COGS-Q580
The Moduli Space and M(atrix) Theory of 9d N=1 Backgrounds of M/String Theory
Ofer Aharony; Zohar Komargodski; Assaf Patir
2007-05-22T23:59:59.000Z
We discuss the moduli space of nine dimensional N=1 supersymmetric compactifications of M theory / string theory with reduced rank (rank 10 or rank 2), exhibiting how all the different theories (including M theory compactified on a Klein bottle and on a Mobius strip, the Dabholkar-Park background, CHL strings and asymmetric orbifolds of type II strings on a circle) fit together, and what are the weakly coupled descriptions in different regions of the moduli space. We argue that there are two disconnected components in the moduli space of theories with rank 2. We analyze in detail the limits of the M theory compactifications on a Klein bottle and on a Mobius strip which naively give type IIA string theory with an uncharged orientifold 8-plane carrying discrete RR flux. In order to consistently describe these limits we conjecture that this orientifold non-perturbatively splits into a D8-brane and an orientifold plane of charge (-1) which sits at infinite coupling. We construct the M(atrix) theory for M theory on a Klein bottle (and the theories related to it), which is given by a 2+1 dimensional gauge theory with a varying gauge coupling compactified on a cylinder with specific boundary conditions. We also clarify the construction of the M(atrix) theory for backgrounds of rank 18, including the heterotic string on a circle.
Robert R. Lompay; Alexander N. Petrov
2013-07-01T23:59:59.000Z
Arbitrary diffeomorphically invariant metric-torsion theories of gravity are considered. It is assumed that Lagrangians of such theories contain derivatives of field variables (tensor densities of arbitrary ranks and weights) up to a second order only. The generalized Klein-Noether methods for constructing manifestly covariant identities and conserved quantities are developed. Manifestly covariant expressions are constructed without including auxiliary structures like a background metric. In the Riemann-Cartan space, the following \\emph{manifestly generally covariant results} are presented: (a) The complete generalized system of differential identities (the Klein-Noether identities) is obtained. (b) The generalized currents of three types depending on an arbitrary vector field displacements are constructed: they are the canonical Noether current, symmetrized Belinfante current and identically conserved Hilbert-Bergmann current. In particular, it is stated that the symmetrized Belinfante current does not depend on divergences in the Lagrangian. (c) The generalized boundary Klein theorem (third Noether theorem) is proved. (d) The construction of the generalized superpotential is presented in details, and questions related to its ambiguities are analyzed.
Harling, B v
2010-01-01T23:59:59.000Z
In this thesis, we study throats in the early, hot universe. Throats are a common feature of the landscape of type IIB string theory. If a throat is heated during cosmological evolution, energy is subsequently transferred to other throats and to the standard model. We calculate the heat transfer rate and the decay rate of throat-localized Kaluza-Klein states in a ten-dimensional model. For the calculation, we employ the dual description of the throats in terms of gauge theories. We discuss modifications of the decay rate which arise in flux compactifications and for Klebanov-Strassler throats and emphasize the role of tachyonic scalars in such throats in mediating decays of Kaluza-Klein modes. Our results are also applicable to the energy transfer from the heated standard model to throats. We determine the resulting energy density in throats at our epoch in dependence of their infrared scales and of the reheating temperature. The Kaluza-Klein modes in the throats decay to other sectors with a highly suppresse...
Samuel P. Bowen; Jay D. Mancini
2012-03-26T23:59:59.000Z
This is a study of a possible alternative procedure for adding a potential energy to the free electron Dirac equation. When Dirac added potentials to his free electron equation, there were two alternatives (here called D1 and D2). He chose D1 and lost charge conjugation symmetry, found Ehrenfest equations that depended on the sign of the energy of the state determining the expectation value, encountered Klein tunneling, zitterbewegung and the Klein paradox. The D1 alternative also predicted that deep potentials should pull positive energy states down into the negative energy continuum, possibly creating an unstable vacuum. Extensive experiments (1975-1997) found no evidence for this instability, but did find low energy electron-positron pairs with sharply defined energies and unusually low counting statistics. These pairs tended to disappear with higher beam currents. This paper explores the other alternative, here called D2 and finds charge conjugation symmetry preserved, Ehrenfest equations are classical, Klein tunneling is not present, unstable vacuua are forbidden, zitterbewegung is absent in the charge current density, new excitations of bound electron-positron pairs are possible in atoms, and the energies at which low energy electron-positron pair production in heavy ion scattering occurs is well described. Also all of the positive energy calculations, including those with the Coulomb potential, the hydrogen-like atom, are retained exactly the same as found in alternative D1. It might have been better if Dirac had chosen alternative D2.
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Search for universal extra dimensions in ppbar collisions
Abazov, Victor Mukhamedovich; /Dubna, JINR; Abbott, Braden Keim; /Oklahoma U.; Acharya, Bannanje Sripath; /Tata Inst.; Adams, Mark Raymond; /Illinois U., Chicago; Adams, Todd; /Florida State U.; Alexeev, Guennadi D.; /Dubna, JINR; Alkhazov, Georgiy D.; /St. Petersburg, INP; Alton, Andrew K.; /Michigan U. /Augustana Coll., Sioux Falls; Alverson, George O.; /Northeastern U.; Aoki, Masato; /Fermilab; Askew, Andrew Warren; /Florida State U. /Stockholm U.
2011-12-01T23:59:59.000Z
We present a search for Kaluza-Klein (KK) particles predicted by models with universal extra dimensions (UED) using a data set corresponding to an integrated luminosity of 7.3 fb{sup -1}, collected by the D0 detector at a p{bar p} center of mass energy of 1.96 TeV. The decay chain of KK particles can lead to a final state with two muons of the same charge. This signature is used to set a lower limit on the compactification scale of R{sup -1} > 260 GeV in a minimal UED model.
Radion clouds around evaporating black holes
J. R. Morris
2009-09-03T23:59:59.000Z
A Kaluza-Klein model, with a matter source associated with Hawking radiation from an evaporating black hole, is used to obtain a simple form for the radion effective potential. The environmental effect generally causes a matter-induced shift of the radion vacuum, resulting in the formation of a radion cloud around the hole. There is an albedo due to the radion cloud, with an energy dependent reflection coefficient that depends upon the size of the extra dimensions and the temperature of the hole.
Fully QED/relativistic theory of light pressure on free electrons by isotropic radiation
A. E. Kaplan
2015-05-19T23:59:59.000Z
A relativistic/QED theory of light pressure on electrons by an isotropic, in particular blackbody radiation predicts thermalization rates of free electrons over entire span of energies available in the lab and the nature. The calculations based on the QED Klein-Nishina theory of electron-photon scattering and relativistic Fokker-Planck equation, show that the transition from classical (Thompson) to QED (Compton) thermalization determined by the product of electron energy and radiation temperature, is reachable under conditions for controlled nuclear fusion, and predicts large acceleration of electron thermalization in the Compton domain and strong damping of plasma oscillations at the temperatures near plasma nuclear fusion.
Shuang-Qing Wu
2007-12-07T23:59:59.000Z
We present the general exact solutions for non-extremal rotating charged black holes in the Godel universe of five-dimensional minimal supergravity theory. They are uniquely characterized by four non-trivial parameters, namely the mass $m$, the charge $q$, the Kerr equal rotation parameter $a$, and the Godel parameter $j$. We calculate the conserved energy, angular momenta and charge for the solutions and show that they completely satisfy the first law of black hole thermodynamics. We also study the symmetry and separability of the Hamilton-Jacobi and the massive Klein-Gordon equations in these Einstein-Maxwell-Chern-Simons-Godel black hole backgrounds.
Natural Dirac Neutrinos from Warped Extra Dimension
Jackson M. S. Wu
2010-06-29T23:59:59.000Z
Dirac neutrinos arising from gauged discrete symmetry \\`a la Krauss-Wilczek are implemented in the minimal custodial Randall-Sundrum model. In the case of a normal hierarchy, all lepton masses and mixing pattern can be naturally reproduced at the TeV scale set by the electroweak constraints, while simultanously satisfy bounds from lepton flavour violation. A nonzero neutrino mixing angle, $\\theta_{13}$, is generic in the scenario, as well as the existence of sub-TeV right-handed Kaluza-Klein neutrinos, which may be searched for at the LHC.
Running couplings in extra dimensions
Jisuke Kubo; Haruhiko Terao; George Zoupanos
2000-10-07T23:59:59.000Z
The regularization scheme dependence of running couplings in extra compactified dimensions is discussed. We examine several regularization schemes explicitly in order to analyze the scheme dependence of the Kaluza-Klein threshold effects, which cause the power law running, in the case of the scalar theory in five dimensions with one dimension compactified. It is found that in 1-loop order, the net difference in the running of the coupling among the different schemes is reduced to be rather small after finite renormalization. An additional comment concerns the running couplings in the warped extra dimensions which are found to be regularization dependent above TeV scale.
Minimal coupling method and the dissipative scalar field theory
Fardin Kheirandish; Majid Amooshahi
2005-07-20T23:59:59.000Z
Quantum field theory of a damped vibrating string as the simplest dissipative scalar field investigated by its coupling with an infinit number of Klein-Gordon fields as the environment by introducing a minimal coupling method. Heisenberg equation containing a dissipative term proportional to velocity obtained for a special choice of coupling function and quantum dynamics for such a dissipative system investigated. Some kinematical relations calculated by tracing out the environment degrees of freedom. The rate of energy flowing between the system and it's environment obtained.
Plasmon-graviton conversion in a magnetic field in TeV-scale gravity
E. Yu. Melkumova
2011-12-13T23:59:59.000Z
Kaluza-Klein (KK) gravitons emission rates due to plasmon-graviton conversion in magnetic field are computed within the ADD model of TeV-scale gravity. Plasma is described in the kinetic approach as the system of charged particles and Maxwell field both confined on the brane. Interaction with multidimensional gravity living in the bulk with $n$ compact extra dimensions is introduced within the linearized theory. Plasma collective effects enter through the two-point correlation function of the fluctuations of the energy-momentum tensor. The estimate for magnetic stars is presented leading to the lower limit of the D-dimensional Plank mass.
Extreme Science (LBNL Science at the Theater)
Ajo-Franklin, Caroline; Klein, Spencer; Minor, Andrew; Torok, Tamas
2012-02-27T23:59:59.000Z
On Feb. 27, 2012 at the Berkeley Repertory Theatre, four Berkeley Lab scientists presented talks related to extreme science - and what it means to you. Topics include: Neutrino hunting in Antarctica. Learn why Spencer Klein goes to the ends of the Earth to search for these ghostly particles. From Chernobyl to Central Asia, Tamas Torok travels the globe to study microbial diversity in extreme environments. Andrew Minor uses the world's most advanced electron microscopes to explore materials at ultrahigh stresses and in harsh environments. And microbes that talk to computers? Caroline Ajo-Franklin is pioneering cellular-electrical connections that could help transform sunlight into fuel.
Trace element analysis of Texas lignite
Mahar, Sean
1982-01-01T23:59:59.000Z
. Gluskoter, and N. F. Shimp: Occurence and Distribution of Potentiall Volatile Trace Elements in Coal. Illinois State Geological Survey. Urbana, IL. (July, 1974). 39 [26] Andren, A. W. , D. H. Klein, and Y. Talmi: Selenium in Coal- Fired Plant Emissions.... Envir. Sci. and Tech. , 9:856, (Sept. , 1975). [27] Gluskoter, H. J. , R. R. Ruch, W. G. Miller, R. A. Cahill, G. B. Breher and J, K. Kuhn: Trace Elements in Coal: Occur- rence and Distribution. Illinois State Geological Sur- vey. Urbane, Illinois...
Hidden Photons in Extra Dimensions
Chris J. Wallace; Joerg Jaeckel; Sabyasachi Roy
2013-11-25T23:59:59.000Z
Additional U(1) gauge symmetries and corresponding vector bosons, called hidden photons, interacting with the regular photon via kinetic mixing are well motivated in extensions of the Standard Model. Such extensions often exhibit extra spatial dimensions. In this note we investigate the effects of hidden photons living in extra dimensions. In four dimensions such a hidden photon is only detectable if it has a mass or if there exists additional matter charged under it. We note that in extra dimensions suitable masses for hidden photons are automatically present in form of the Kaluza-Klein tower.
Fully QED/relativistic theory of light pressure on free electrons by isotropic radiation
A. E. Kaplan
2015-07-27T23:59:59.000Z
A relativistic/QED theory of light pressure on electrons by an isotropic, in particular blackbody radiation predicts thermalization rates of free electrons over entire span of energies available in the lab and the nature. The calculations based on the QED Klein-Nishina theory of electron-photon scattering and relativistic Fokker-Planck equation, show that the transition from classical (Thompson) to QED (Compton) thermalization determined by the product of electron energy and radiation temperature, is reachable under conditions for controlled nuclear fusion, and predicts large acceleration of electron thermalization in the Compton domain and strong damping of plasma oscillations at the temperatures near plasma nuclear fusion.
Mid-American Review of Sociology, Volume 15, Number 2 (SPRING, 1991): Back Matter
1991-04-01T23:59:59.000Z
: An Intellectual Biography. 11(1):95-98. Bonanno, Alessandro. 1987. "Decentralization, Informalization, and the State: A Reinterpretation of the Farm Crisis in the U.S." 12(1):15-33. Bradfield, Cecil D. and R. Ann Meyers. 1980. "Make Today Count: A Mutual Support... of Judith Weinstein Klein, Jewish Identity and Self-Esteem: Healing Wounds Through Ethnotherapy. 7(1):185-187. Editors. 1976. "A Letter From the Editors." 1(1):i-iv. Eitzen, D. Stanley. 1990. "Conflict and Order: Implications for a Research Agenda." 14...
Plant maintenance and plant life extension issue, 2007
Agnihotri, Newal (ed.)
2007-03-15T23:59:59.000Z
The focus of the March-April issue is on plant maintenance and plant life extension. Major articles/reports in this issue include: Three proposed COLs expected in 2007, by Dale E. Klein, U.S. Nuclear Regulatory Commission; Delivering behaviors that our customers value, by Jack Allen, Westinghouse Electric Company; Facilitating high-level and fuel waste disposal technologies, by Malcolm Gray, IAEA, Austria; Plant life management and long-term operation, by Pal Kovacs, OECD-NEA, France; Measuring control rod position, by R. Taymanov, K. Sapozhnikova, I. Druzhinin, D.I. Mendeleyev, Institue for Metrology, Russia; and, 'Modernization' means higher safety, by Svetlana Genova, Kozluduy NPP plc, Bulgaria.
Graviton propagators in supergravity and noncommutative gauge theory
Kitazawa, Yoshihisa [High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801 (Japan); Department of Particle and Nuclear Physics, Graduate University for Advanced Studies, Tsukuba, Ibaraki 305-0801 (Japan); Nagaoka, Satoshi [High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801 (Japan)
2007-02-15T23:59:59.000Z
We investigate the graviton propagator in the type IIB supergravity background which is dual to 4 dimensional noncommutative gauge theory. We assume that the boundary is located not at the infinity but at the noncommutative scale where the string frame metric exhibits the maximum. We argue that the Neumann boundary condition is the appropriate boundary condition to be adopted at the boundary. We find that the graviton propagator behaves just as that of the 4 dimensional massless graviton. On the other hand, the nonanalytic behaviors of the other Kaluza-Klein modes are not significantly affected by the Neumann boundary condition.
Phenomenology of Noncommutative Field Theories
Christopher D. Carone
2004-09-29T23:59:59.000Z
Experimental limits on the violation of four-dimensional Lorentz invariance imply that noncommutativity among ordinary spacetime dimensions must be small. In this talk, I review the most stringent bounds on noncommutative field theories and suggest a possible means of evading them: noncommutativity may be restricted to extra, compactified spatial dimensions. Such theories have a number of interesting features, including Abelian gauge fields whose Kaluza-Klein excitations have self couplings. We consider six-dimensional QED in a noncommutative bulk, and discuss the collider signatures of the model.
General self-tuning solutions and no-go theorem
Förste, Stefan [Bethe Center for Theoretical Physics and Physikalisches Institut der Universität Bonn, Nussallee 12, 53115 Bonn (Germany); Kim, Jihn E. [Department of Physics, Kyung Hee University, Seoul 130-701 (Korea, Republic of); Lee, Hyun Min, E-mail: forste@th.physik.uni-bonn.de, E-mail: jihnekim@gmail.com, E-mail: hyun.min.lee@kias.re.kr [School of Physics, KIAS, Seoul 130-722 (Korea, Republic of)
2013-03-01T23:59:59.000Z
We consider brane world models with one extra dimension. In the bulk there is in addition to gravity a three form gauge potential or equivalently a scalar (by generalisation of electric magnetic duality). We find classical solutions for which the 4d effective cosmological constant is adjusted by choice of integration constants. No go theorems for such self-tuning mechanism are circumvented by unorthodox Lagrangians for the three form respectively the scalar. It is argued that the corresponding effective 4d theory always includes tachyonic Kaluza-Klein excitations or ghosts. Known no go theorems are extended to a general class of models with unorthodox Lagrangians.
Arne Goedeke; Alan D. Rendall
2010-02-21T23:59:59.000Z
It is known that all spatially homogeneous solutions of the vacuum Einstein equations in four dimensions which exist for an infinite proper time towards the future are future geodesically complete. This paper investigates whether the analogous statement holds in higher dimensions. A positive answer to this question is obtained for a large class of models which can be studied with the help of Kaluza-Klein reduction to solutions of the Einstein-scalar field equations in four dimensions. The proof of this result makes use of a criterion for geodesic completeness which is applicable to more general spatially homogeneous models.
Modeling water waves beyond perturbations
Clamond, Didier
2015-01-01T23:59:59.000Z
In this chapter, we illustrate the advantage of variational principles for modeling water waves from an elementary practical viewpoint. The method is based on a `relaxed' variational principle, i.e., on a Lagrangian involving as many variables as possible, and imposing some suitable subordinate constraints. This approach allows the construction of approximations without necessarily relying on a small parameter. This is illustrated via simple examples, namely the Serre equations in shallow water, a generalization of the Klein-Gordon equation in deep water and how to unify these equations in arbitrary depth. The chapter ends with a discussion and caution on how this approach should be used in practice.
Localization on the Landscape and Eternal Inflation
Laura Mersini-Houghton; Malcolm J. Perry
2014-04-22T23:59:59.000Z
We investigate the validity of the assertion that eternal inflation populates the landscape of string theory. We verify that bubble solutions do not satisfy the Klein Gordon equation for the landscape potential. Solutions to the landscape potential within the formalism of quantum cosmology are Anderson localized wavefunctions. Those are inconsistent with inflating bubble solutions. The physical reasons behind the failure of a relation between eternal inflation and the landscape are rooted in quantum phenomena such as interference between wavefunction concentrated around the various vacua in the landscape.
Greybody factors for Myers-Perry black holes
Boonserm, Petarpa; Ngampitipan, Tritos; Visser, Matt
2014-01-01T23:59:59.000Z
The Myers-Perry black holes are higher-dimensional generalizations of the usual (3+1)-dimensional rotating Kerr black hole. They are of considerable interest in Kaluza-Klein models, specifically within the context of brane-world versions thereof. In the present article we shall consider the greybody factors associated with scalar field excitations of the Myers-Perry spacetimes, and develop some rigorous bounds on these greybody factors. These bounds are of relevance for characterizing both the higher-dimensional Hawking radiation, and the super-radiance, that is expected for these spacetimes.
Kim, H.; Baltazar, J.C.; Haberl, J.; Lewis, C.; Yazdani, B.
2011-01-01T23:59:59.000Z
Star Permanent CFL or Fluorescent Indoor Lamps 75% Energy Star Permanent CFL or Fluorescent Indoor Lamps Solar Domestic Hot Water System (64 sq. ft. collector, 80 gal tank) Solar Domestic Hot Water System (32 sq. ft. collector, 65 gal tank) 5 7..., which is consisted of one or two 32 sq.ft. of flat plate solar collectors using the F-Chart program (Klein and Beckman 1983). In this analysis, the collector tilt was assumed to be the same as the latitude of the location. Any supplementary hot water...
Quantum mechanics of the closed collapsing Universe
K. A. Viarenich; V. L. Kalashnikov; S. L. Cherkas
2007-12-31T23:59:59.000Z
Two approaches to quantization of Freedman's closed Universe are compared. In the first approach, the Shrodinger's norm of the wave function of Universe is used, and in the second approach, the Klein-Gordon's norm is used. The second one allows building the quasi-Heisenberg operators as functions of time and finding their average values. It is shown that the average value of the Universe scale factor oscillates with damping and approaches to some constant value at the end of the Universe evolution.
An origin of the universe: a model alternative to Big Bang
Andrzej Mercik; Szymon Mercik
2006-04-04T23:59:59.000Z
We propose a new approach to the model of an origin of the universe built by Oscar Klein and Hannes Alfv\\'{e}n. Some modifications of assumptions underlying the model result in a possible scenario of the universe creation consistent with observations. We explain the large scale structre of the universe and we estimate the Hubble constant value as well as the number of galaxies in the universe. The model does not require many assumptions made in the model based on the Big Bang idea.
SSRL- Stanford Synchrotron Radiation Laboratory
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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:1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:5(Million Cubic Feet) Oregon (Including Vehicle Fuel) (Million CubicRefiners SwitchBenefitsBeam Line Support | FloorMeetingSSRL WeathersMelvin P. Klein
Black, Ross A.
1992-09-10T23:59:59.000Z
. Surv. Prof. Pap. 793, 39 pp., 1973. Black, R. A., S. B. Smithson, and R. L. Kirlin, Adaptive filtering of gravity and topography data, western U.S. (abstract), Eos Trans./AGU, 68, 280, 1987. Clarke, G. K. C., Linear filters to suppress terrain... and uranium potential of Precambrian conglomerates in SE Wyoming: rep. DJBX-139-81, 551 pp., Bendix Field Engineering Corp., 1981. Klein, T. L., The geology and geochemistry of the sulphide deposits of the Seminoe District, Carbon Co. Wyoming, Ph...
High Spins Beyond Rarita-Schwinger Framework
Mariana Kirchbach; Mauro Napsuciale
2005-05-27T23:59:59.000Z
We study the eigenvalue problem of the squared Pauli-Lubanski vector, W^{2}, in the Spinor-Vector representation space and derive from it that the -s(s+1)m^{2} subspace with s=3/2, i.e. spin 3/2 in the rest frame, is pinned down by the one sole Klein-Gordon like equation, [ (p^{2}-m^{2})g_{\\alpha\\beta}-{2/3}p_{\\beta}p_{\\alpha}- {1/3}(p_{\\alpha}\\gamma_{\\beta}+p_{\\beta}\\gamma_{\\alpha})\
Dirac solutions for quaternionic potentials
De Leo, Stefano, E-mail: deleo@ime.unicamp.br; Giardino, Sergio, E-mail: giardino@ime.unicamp.br [Department of Applied Mathematics, State University of Campinas, Campinas, Sao Paulo 13083-970 (Brazil)] [Department of Applied Mathematics, State University of Campinas, Campinas, Sao Paulo 13083-970 (Brazil)
2014-02-15T23:59:59.000Z
The Dirac equation is solved for quaternionic potentials, i?V{sub 0} + j?W{sub 0} (V{sub 0}?R , W{sub 0}?C). The study shows two different solutions. The first one contains particle and anti-particle solutions and leads to the diffusion, tunneling, and Klein energy zones. The standard solution is recovered taking the complex limit of this solution. The second solution, which does not have a complex counterpart, can be seen as a V{sub 0}-antiparticle or |W{sub 0}|-particle solution.
DRAFT ADVICE - UNACCEPTABLE PROGRAM IMPACTS UNDER FY 97 BUDGET
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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:1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:5 TablesExports(Journal Article)41clothThe Bonneville Power Administration would likeCustomerComments SignUtah* The Columbia River is Keith Klein,
DRAFT ADVICE - UNACCEPTABLE PROGRAM IMPACTS UNDER FY 97 BUDGET
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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:1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:5 TablesExports(Journal Article)41clothThe Bonneville Power Administration would likeCustomerComments SignUtah* The Columbia River is Keith Klein, Jessie
DRAFT ADVICE - UNACCEPTABLE PROGRAM IMPACTS UNDER FY 97 BUDGET
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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:1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:5 TablesExports(Journal Article)41clothThe Bonneville Power Administration would likeCustomerComments SignUtah* The Columbia River is Keith Klein,
DRAFT ADVICE - UNACCEPTABLE PROGRAM IMPACTS UNDER FY 97 BUDGET
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:1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:5 TablesExports(Journal Article)41clothThe Bonneville Power Administration would likeCustomerComments SignUtah* The Columbia River is Keith Klein,Re:
DRAFT ADVICE - UNACCEPTABLE PROGRAM IMPACTS UNDER FY 97 BUDGET
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:1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:5 TablesExports(Journal Article)41clothThe Bonneville Power Administration would likeCustomerComments SignUtah* The Columbia River is Keith Klein,Re:John
Direct-Current Resistivity Survey At Kilauea East Rift Geothermal Area
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Direct-Current Resistivity Survey At Kilauea East Rift Geothermal Area
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 Data Center Home Page on DeliciousPlasmaP aCentrothermDepew, New York: Energy Resources JumpDheeru PowergenUnits(Kauahikaua & Klein, 1978)
Direct-Current Resistivity Survey At Lightning Dock Area (Cunniff & Bowers,
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Tracer Testing | Open Energy Information
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 Data Center Home Page onsource History View New PagessourceRavenandEconomiesEnergyTitle 29Trace Element Analysis (Klein, 2007)EnergyG, andTracer
Egar, Joseph Michael
1959-01-01T23:59:59.000Z
systems installed in commercial buildings. A large prototypical office building (124,000 ft2) was used in simulation modeling. The DOE-2.1e program was used for whole building simulation, F-Chart (Beckman et al., 1977) for solar thermal systems... analysis, and PV F-Chart (Klein and Beckman, 1983) for solar PV systems analysis. INTRODUCTION This study is an extension of previous research. The preceding studies were (1) development of a detailed calibrated simulation model for a large office...
1989-01-01T23:59:59.000Z
THE FINAL FRONTIER STAR TREK V: THE FINAL FRONTIER will open in theatres everywhere on Friday, June 9, 1989. No matter what you may have heard at recent con- ventions or read in some fan club newsletters, that is the official date given by Paramount... - 2719 LaSalle, Niagara Falls, NY 14301 ARTIST: LaVena Kay Kidd DATA PROCESSOR: Isabell Klein 31 Published At: 10821 Littletree Place SW Port Orchard, WA 98366 TREKisM is the newsletter of the Star Trek SPECIAL INTEREST GROUP (SIG) of Mensa...
Fully QED/relativistic theory of light pressure on free electrons by isotropic radiation
A. E. Kaplan
2015-02-25T23:59:59.000Z
A relativistic/QED theory of light pressure on electrons by an isotropic, in particular blackbody radiation predicts thermalization rates of free electrons over entire span of energies available in the lab and the nature. The calculations based on the QED Klein-Nishina theory of electron-photon scattering and relativistic Fokker-Planck equation, show that the transition from classical (Thompson) to QED (Compton) thermalization determined by the product of electron energy and radiation temperature, is reachable under conditions for controlled nuclear fusion, and predicts large acceleration of electron thermalization in the Compton domain.
Buffer-gas-induced absorption resonances in Rb vapor RID B-9041-2008
Mikhailov, E. E.; Novikova, I.; Rostovtsev, Y. V.; Welch, George R.
2004-01-01T23:59:59.000Z
density [57]: g?DsNd . uVdu2?ggrS 38pNl2LD?1/2. s25d Substituting the density of the resonant atoms given by Eq. (23) we obtain the resonance width: g?DsDd ~ uVdu2?ggr 1 ?NLe D2/2skud2 . s26d Figure 16 shows that this formula works only for a.... Scully for useful and stimulating discus- sions, and M. Klein for careful reading of the manuscript. Financial support is provided by the Office of Naval Re- search. [1] E. Arimondo and G. Orriols, Lett. Nuovo Cimento Soc. Ital. Fis. 17, 333 (1976...
Green Functions of Relativistic Field Equations
Ying-Qiu Gu
2006-12-20T23:59:59.000Z
In this paper, we restudy the Green function expressions of field equations. We derive the explicit form of the Green functions for the Klein-Gordon equation and Dirac equation, and then estimate the decay rate of the solution to the linear equations. The main motivation of this paper is to show that: (1). The formal solutions of field equations expressed by Green function can be elevated as a postulate for unified field theory. (2). The inescapable decay of the solution of linear equations implies that the whole theory of the matter world should include nonlinear interaction.
GeoScience Information Society
2008-01-01T23:59:59.000Z
workshops and reports over the past few years addressing the challenges and opportunities related to the current digital data revolution, including the need for ade- quate stewardship of data: National Science Foundation Blue-Ribbon Advisory Panel....E., Droegemeier, K.K., Feldman, S.I., Garcia -Molina, H., Klein, M.L., Messerschmitt, D.G., Messina, P., Ostriker, J.P., and Wright, M.H., 2003, Revolutionizing science and engineering through cyberinfrastructure; Report of the National Science Foundation Blue-Ribbon...
Modelling of partially-resolved oceanic symmetric instability
Bachman, S. D.; Taylor, J. R.
2014-08-04T23:59:59.000Z
–27 Contents lists availab Ocean Mo els2008a,b,c; Fox-Kemper et al., 2008; Klein et al., 2008), (3) the Rossby (Ro) and Richardson (Ri) numbers are Oð1Þ, meaning that balanced models are not appropriate to describe the motion As computational power increases... sign of f (Hoskins, 1974). Fronts in the surface mixed layer of the ocean feature strong lateral density gradients, which in conjunction with wind forcing and/or buoy- ancy fluxes create conditions favorable to the development of SI (Thomas and Taylor...
Suppressing Proton Decay in Theories with Localised Fermions
Bobby S. Acharya; Roberto Valandro
2006-08-01T23:59:59.000Z
We calculate the contribution to the proton decay amplitude from Kaluza-Klein lepto-quarks in theories with extra dimensions, localised fermions and gauge fields which propagate in the bulk. Such models naturally occur within the context of M-theory. In SU(5) models we show that carefully including all such modes gives a distinctive pattern of decays through various channels including a strong suppression of decays into neutrinos or right handed positrons. By contrast there is no such suppression for SO(10).
On the Classical Solutions of Two Dimensional Inviscid Rotating Shallow Water System
Bin Cheng; Chunjing Xie
2009-07-01T23:59:59.000Z
We prove global existence and asymptotic behavior of classical solutions for two dimensional inviscid Rotating Shallow Water system with small initial data subject to the zero-relative-vorticity constraint. One of the key steps is a reformulation of the problem into a symmetric quasilinear Klein-Gordon system, for which the global existence of classical solutions is then proved with combination of the vector field approach and the normal forms. We also probe the case of general initial data and reveal a lower bound for the lifespan that is almost inversely proportional to the size of the initial relative vorticity.
Igor I. Smolyaninov
2010-07-19T23:59:59.000Z
Optical space in metamaterials may be engineered to mimic the landscape of a multidimensional Universe which has regions of different topology and different effective dimensionality. The "metamaterial landscape" may include regions in which one or two spatial dimensions are compactified. Nonlinear optics of metamaterials in these regions mimics either U(1) or SU(2) Kaluza-Klein theories having one or more kinds of effective charges. As a result, novel "photon blockade" nonlinear optical metamaterial devices may be realized. Topology-changing phase transitions in such metamaterials lead to considerable particle creation perceived as flashes of light, thus providing a toy model of birth of an individual physical Universe.
Towards a realistic axion star
J. Barranco; A. Bernal
2008-08-01T23:59:59.000Z
In this work we estimate the radius and the mass of a self-gravitating system made of axions. The quantum axion field satisfies the Klein-Gordon equation in a curved space-time and the metric components of this space-time are solutions to the Einstein equations with a source term given by the vacuum expectation value of the energy-momentum operator constructed from the axion field. As a first step towards an axion star we consider the up to the sixth term in the axion potential expansion. We found that axion stars would have masses of the order of asteroids and radius of the order of few centimeters.
Emergent observable deSitter space from an Equation of Motion
Liu, Leihua
2015-01-01T23:59:59.000Z
We propose that de-Sitter space-time originates from Gaussian distribution in a quantum harmonic oscillator system. This equation associates with a massless Klein-Gordon equation. We discover that every excited states of quantum oscillator also contributes for the de-Sitter space-time. The observable part of metric is related to energy scale and excited quantum number $n$. As for off-diagonal elements, it comes from the superposition of quantum mechanics. These elements can cause in-homogeneous at the very beginning of universe.
Multidimensional SU(2) wormhole between two null surfaces
V. D. Dzhunushaliev
1997-04-16T23:59:59.000Z
The multidimensional gravity on principal bundle with structural SU(2) gauge group is considered. The Lorentzian wormhole solution disposed between two null surfaces is founded in this case. As the nondiagonal components are similar to a gauge fields (in Kaluza - Klein's sense) then in some sense this solution is dual to the black hole in 4D Einstein - Yang - MIlls gravity: 4D black hole has the stationary area outside of event horizon but multidimensional wormhole inside null surface (on which $ds^2=0$).
V. Dzhunushaliev
1998-07-29T23:59:59.000Z
A geometrical model of electric charge is proposed. This model has ``naked'' charge screened with a ``fur - coat'' consisting of virtual wormholes. The 5D wormhole solution in the Kaluza - Klein theory is the ``naked'' charge. The splitting off of the 5D dimension happens on the two spheres (null surfaces) bounding this 5D wormhole. This allows one to sew two Reissner - Nordstr\\"om black holes onto it on both sides. The virtual wormholes entrap a part of the electrical flux lines coming into the ``naked'' charge. This effect essentially changes the charge visible at infinity so that it satisfies the real relation $m^2
Emergent gravity/Non-linear U(1) gauge theory correspondence
Supriya Kar; K. Priyabrat Pandey; Abhishek K. Singh; Sunita Singh
2010-02-21T23:59:59.000Z
Kaluza-Klein gravity is revisted, with renewed interest, in a type IIB string theory on $S^1\\times K3$. The irreducible curvature tensors are worked out in the, T-dual, emergent gravity in 4D to yield a non-linear U(1) gauge theory. Interestingly, the T-duality may be seen to describe an open/closed string duality at a self-dual string coupling. The obtained deformation in $AdS_5$ black hole is analyzed to introduce the notion of temperature in the emergent gravity underlying the recent idea of entropic force.
Buffer-gas-induced absorption resonances in Rb vapor RID B-9041-2008
Mikhailov, E. E.; Novikova, I.; Rostovtsev, Y. V.; Welch, George R.
2004-01-01T23:59:59.000Z
density [57]: g?DsNd . uVdu2?ggrS 38pNl2LD?1/2. s25d Substituting the density of the resonant atoms given by Eq. (23) we obtain the resonance width: g?DsDd ~ uVdu2?ggr 1 ?NLe D2/2skud2 . s26d Figure 16 shows that this formula works only for a.... Scully for useful and stimulating discus- sions, and M. Klein for careful reading of the manuscript. Financial support is provided by the Office of Naval Re- search. [1] E. Arimondo and G. Orriols, Lett. Nuovo Cimento Soc. Ital. Fis. 17, 333 (1976...
Covariant propagator in AdS5 x S5 superspace
Peng Dai; Ru-Nan Huang; Warren Siegel
2010-02-10T23:59:59.000Z
We give an explicit superspace propagator for the chiral scalar field strength of 10D IIB supergravity on an AdS5 x S5 background. Because this space is conformally flat, the propagator is very simple, almost identical to that of flat space. We also give an explicit expansion over the Kaluza-Klein modes of S5. The fact that the full propagator is so much simpler suggests that, as in 2D conformal field theory, AdS/CFT calculations would be simpler without a mode expansion.
Abazov, Victor Mukhamedovich; /Dubna, JINR; Abbott, Braden Keim; /Oklahoma U.; Abolins, Maris A.; /Michigan State U.; Acharya, Bannanje Sripath; /Tata Inst.; Adams, Mark Raymond; /Illinois U., Chicago; Adams, Todd; /Florida State U.; Aguilo, Ernest; /York U., Canada; Alexeev, Guennadi D.; /Dubna, JINR; Alkhazov, Georgiy D.; /St. Petersburg, INP; Alton, Andrew K.; /Michigan U. /Augustana Coll., Sioux Falls; Alverson, George O.; /Northeastern U. /Rio de Janeiro, CBPF
2010-04-01T23:59:59.000Z
Using 5.4 fb{sup -1} of integrated luminosity from p{bar p} collisions at {radical}s = 1.96 TeV collected by the D0 detector at the Fermilab Tevatron Collider, we search for decays of the lightest Kaluza-Klein mode of the graviton in the Randall-Sundrum model to ee and {gamma}{gamma}. We set 95% C.L. lower limits on the mass of the lightest graviton between 560 GeV and 1050 GeV for values of the coupling k/{bar M}{sub Pl} between 0.01 and 0.1.
Carrera, Edgar Fernando; /Florida State U.
2008-12-01T23:59:59.000Z
This dissertation presents a search for large extra dimensions in the single photon plus missing transverse energy final states. We use a data sample of approximately 2.7 fb{sup -1} of p{bar p} collisions at {radical}s = 1.96 TeV (recorded with the D{sup -} detector) to investigate direct Kaluza Klein graviton production and set limits, at the 95% C.L., on the fundamental mass scale M{sub D} from 970 GeV to 816 GeV for two to eight extra dimensions.
Physics with Single Photons plus Missing Energy Final States at D0
Carrera, Edgar; /Florida State U.
2009-06-01T23:59:59.000Z
Final state signatures of a single photon and missing transverse energy offer unique and powerful advantages in the search for new physics. This document presents the first observation of the Z{gamma} {yields} {nu}{bar {nu}}{gamma} process at the Tevatron Collider at 5.1 standard deviations significance, as well as some of the strongest limits on anomalous trilinear ZZ{gamma} and Z{gamma}{gamma} couplings to date. Additionally, we present the latest D0 results on a search for direct production of Kaluza Klein gravitons in association with single photons.
Fermionic and Bosonic Stabilizing Effects for Type I and Type II Dimension Bubbles
J. R. Morris
2004-05-21T23:59:59.000Z
We consider two types of "dimension bubbles", which are viewed as 4d nontopological solitons that emerge from a 5d theory with a compact extra dimension. The size of the extra dimension varies rapidly within the domain wall of the soliton. We consider the cases of type I (II) bubbles where the size of the extra dimension inside the bubble is much larger (smaller) than outside. Type I bubbles with thin domain walls can be stabilized by the entrapment of various particle modes whose masses become much smaller inside than outside the bubble. This is demonstrated here for the cases of scalar bosons, fermions, and massive vector bosons, including both Kaluza-Klein zero modes and Kaluza-Klein excitation modes. Type II bubbles expel massive particle modes but both types can be stabilized by photons. Plasma filled bubbles containing a variety of massless or nearly massless radiation modes may exist as long-lived metastable states. Furthermore, in contrast to the case with a "gravitational bag", the metric for a fluid-filled dimension bubble does not exhibit a naked singularity at the bubble's center.
Higgs production and decay in models of a warped extra dimension with a bulk Higgs
Archer, Paul R. [Johannes Gutenberg University, Mainz (Germany); Carena, Marcela [Fermi National Acceleraor Laboratory, Batavia, IL (United States); Univ. of Chicago, Chicago, IL (United States); Carmona, Adrian [ETH Zurich (Switzerland); Neubert, Matthias [Johannes Gutenberg University, Mainz (Germany); Cornell Univ., Ithaca, NY (United States)
2015-01-01T23:59:59.000Z
Warped extra-dimension models in which the Higgs boson is allowed to propagate in the bulk of a compact AdS? space are conjectured to be dual to models featuring a partially composite Higgs boson. They offer a framework with which to investigate the implications of changing the scaling dimension of the Higgs operator, which can be used to reduce the constraints from electroweak precision data. In the context of such models, we calculate the cross section for Higgs production in gluon fusion and the H ? ?? decay rate and show that they are finite (at one-loop order) as a consequence of gauge invariance. The extended scalar sector comprising the Kaluza-Klein excitations of the Standard Model scalars is constructed in detail. The largest effects are due to virtual KK fermions, whose contributions to the cross section and decay rate introduce a quadratic sensitivity to the maximum allowed value y_{*} of the random complex entries of the 5D anarchic Yukawa matrices. We find an enhancement of the gluon-fusion cross section and a reduction of the H ? ?? rate as well as of the tree-level Higgs couplings to fermions and electroweak gauge bosons. We perform a detailed study of the correlated signal strengths for different production mechanisms and decay channels as functions of y_{*}, the mass scale of Kaluza-Klein resonances and the scaling dimension of the composite Higgs operator.
The generalized Erlangen program and setting a geometry for four- dimensional conformal fields
Ne`eman, Y. [Tel Aviv Univ. (Israel). Sackler Faculty of Exact Sciences]|[Texas Univ., Austin, TX (United States). Center for Particle Physics; Hehl, F.W.; Mielke, E.W. [Koeln Univ. (Germany). Inst. fuer Theoretische Physik
1993-10-22T23:59:59.000Z
This is the text of a talk at the International Symposium on ``Mathematical Physics towards the XXI Century`` held in March 1993 at Beersheva, Israel. In the first part we attempt to summarize XXth Century Physics, in the light of Kelvin`s 1900 speech ``Dark Clouds over XIXth Century Physics.`` Contrary to what is usually said, Kelvin predicted that the ``clouds`` (relativity and quantum mechanics) would revolutionize physics and that one hundred years might be needed to harmonize them with classical physics. Quantum Gravity can be considered as a leftover from Kelvin`s program -- so are the problems with the interpretation of quantum mechanics. At the end of the XXth Century, the Standard Model is the new panoramic synthesis, drawn in gauge-geometric lines -- realizing the Erlangen program beyond F. Klein`s expectations. The hierarchy problem and the smallness of the cosmological constant are our ``clouds``, generations and the Higgs sector are to us what radioactivity was in 1900. In the second part we describe Metric-Affine spacetimes. We construct the Noether machinery and provide expressions for the conserved energy and hypermomentum. Superimposing conformal invariance over the affine structure induces the Virasoro-like infinite constraining algebra of diffeomorphisms, applied with constant parameters and opening the possibility of a 4DCFT, similar to 2DCFT.
B. J. Falaye; K. J. Oyewumi; S. M. Ikhdair; M. Hamzavi
2014-10-28T23:59:59.000Z
In this study, approximate analytical solution of Schr\\"odinger, Klein-Gordon and Dirac equations under the Tietz-Wei (TW) diatomic molecular potential are represented by using an approximation for the centrifugal term. We have applied three types of eigensolution techniques; the functional analysis approach (FAA), supersymmetry quantum mechanics (SUSYQM) and asymptotic iteration method (AIM) to solve Klein-Gordon Dirac and Schr\\"odinger equations, respectively. The energy eigenvalues and the corresponding eigenfunctions for these three wave equations are obtained and some numerical results and figures are reported. It has been shown that these techniques yielded exactly same results. some expectation values of the TW diatomic molecular potential within the framework of the Hellmann-Feynman theorem (HFT) have been presented. The probability distributions which characterize the quantum-mechanical states of TW diatomic molecular potential are analysed by means of complementary information measures of a probability distribution called the Fishers information entropy. This distribution has been described in terms of Jacobi polynomials, whose characteristics are controlled by the quantum numbers.
Higgs Production and Decay in Models of a Warped Extra Dimension with a Bulk Higgs
Paul R. Archer; Marcela Carena; Adrian Carmona; Matthias Neubert
2015-01-15T23:59:59.000Z
Warped extra-dimension models in which the Higgs boson is allowed to propagate in the bulk of a compact AdS$_5$ space are conjectured to be dual to models featuring a partially composite Higgs boson. They offer a framework with which to investigate the implications of changing the scaling dimension of the Higgs operator, which can be used to reduce the constraints from electroweak precision data. In the context of such models, we calculate the cross section for Higgs production in gluon fusion and the $H\\to\\gamma\\gamma$ decay rate and show that they are finite (at one-loop order) as a consequence of gauge invariance. The extended scalar sector comprising the Kaluza-Klein excitations of the Standard Model scalars is constructed in detail. The largest effects are due to virtual KK fermions, whose contributions to the cross section and decay rate introduce a quadratic sensitivity to the maximum allowed value $y_\\ast$ of the random complex entries of the 5D anarchic Yukawa matrices. We find an enhancement of the gluon-fusion cross section and a reduction of the $H\\to\\gamma\\gamma$ rate as well as of the tree-level Higgs couplings to fermions and electroweak gauge bosons. We perform a detailed study of the correlated signal strengths for different production mechanisms and decay channels as functions of $y_\\ast$, the mass scale of Kaluza-Klein resonances and the scaling dimension of the composite Higgs operator.
Higgs production and decay in models of a warped extra dimension with a bulk Higgs
DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)
Archer, Paul R.; Carena, Marcela; Carmona, Adrian; Neubert, Matthias
2015-01-01T23:59:59.000Z
Warped extra-dimension models in which the Higgs boson is allowed to propagate in the bulk of a compact AdS? space are conjectured to be dual to models featuring a partially composite Higgs boson. They offer a framework with which to investigate the implications of changing the scaling dimension of the Higgs operator, which can be used to reduce the constraints from electroweak precision data. In the context of such models, we calculate the cross section for Higgs production in gluon fusion and the H ? ?? decay rate and show that they are finite (at one-loop order) as a consequencemore »of gauge invariance. The extended scalar sector comprising the Kaluza-Klein excitations of the Standard Model scalars is constructed in detail. The largest effects are due to virtual KK fermions, whose contributions to the cross section and decay rate introduce a quadratic sensitivity to the maximum allowed value y* of the random complex entries of the 5D anarchic Yukawa matrices. We find an enhancement of the gluon-fusion cross section and a reduction of the H ? ?? rate as well as of the tree-level Higgs couplings to fermions and electroweak gauge bosons. We perform a detailed study of the correlated signal strengths for different production mechanisms and decay channels as functions of y*, the mass scale of Kaluza-Klein resonances and the scaling dimension of the composite Higgs operator.« less
Geometrical Interpretation of Electromagnetism in 5-Dimensional Manifold
TaeHun Kim; Hyunbyuk Kim
2015-07-12T23:59:59.000Z
In this paper Kaluza-Klein theory is revisited and its implications are elaborated. We show that electromagnetic 4-potential is a deformation factor of a 5-dimensional (5D) manifold along the fifth (5th) axis. The charge-to-mass ratio has a physical meaning as the ratio of the movement along the direction of the 5th axis to the movement in the 4D space-time. Examinations on the interaction between particles registered by different observers suggest a covariance breaking of the 5th dimension. In order to have a 5D matter which is consistent with the construction of the 5D manifold, a notion of particle-thread is considered. Finally, the field equations which extend the Einstein field equations give the total energy-momentum tensor as a sum of that of matter, electromagnetic field, and the interaction between electric current and electromagnetic field.
Complex statistics and diffusion in nonlinear disordered particle chains
Antonopoulos, Ch. G., E-mail: chris.antonopoulos@abdn.ac.uk [Institute for Complex Systems and Mathematical Biology (ICSMB), Department of Physics, University of Aberdeen, AB24 3UE Aberdeen (United Kingdom); Bountis, T., E-mail: bountis@math.upatras.gr [Center for Research and Applications of Nonlinear Systems (CRANS), Department of Mathematics, University of Patras, 26500 Patras (Greece); Skokos, Ch., E-mail: haris.skokos@uct.ac.za [Department of Mathematics and Applied Mathematics, University of Cape Town, Rondebosch, Cape Town 7701 (South Africa); Department of Physics, Aristotle University of Thessaloniki, 54124 Thessaloniki (Greece); Drossos, L., E-mail: ldrossos@teimes.gr [High Performance Computing Systems Lab (HPCS lab), Department of Computer and Informatics Engineering, Technological Educational Institute of Western Greece, 30300 Antirion (Greece)
2014-06-15T23:59:59.000Z
We investigate dynamically and statistically diffusive motion in a Klein-Gordon particle chain in the presence of disorder. In particular, we examine a low energy (subdiffusive) and a higher energy (self-trapping) case and verify that subdiffusive spreading is always observed. We then carry out a statistical analysis of the motion, in both cases, in the sense of the Central Limit Theorem and present evidence of different chaos behaviors, for various groups of particles. Integrating the equations of motion for times as long as 10{sup 9}, our probability distribution functions always tend to Gaussians and show that the dynamics does not relax onto a quasi-periodic Kolmogorov-Arnold-Moser torus and that diffusion continues to spread chaotically for arbitrarily long times.
New scenarios for classical and quantum mechanical systems with position dependent mass
J. R. Morris
2015-07-18T23:59:59.000Z
An inhomogeneous Kaluza-Klein compactification to four dimensions, followed by a conformal transformation, results in a system with position dependent mass (PDM). This origin of a PDM is quite different from the condensed matter one. A substantial generalization of a previously studied nonlinear oscillator with variable mass is obtained, wherein the position dependence of the mass of a nonrelativistic particle is due to a dilatonic coupling function emerging from the extra dimension. Previously obtained solutions for such systems can be extended and reinterpreted as nonrelativistic particles interacting with dilaton fields, which, themselves, can have interesting structures. An application is presented for the nonlinear oscillator, where within the new scenario the particle is coupled to a dilatonic string.
Construction and physical properties of Kerr black holes with scalar hair
Carlos Herdeiro; Eugen Radu
2015-05-04T23:59:59.000Z
Kerr black holes with scalar hair are solutions of the Einstein-Klein-Gordon field equations describing regular (on and outside an event horizon), asymptotically flat black holes with scalar hair (arXiv:1403.2757). These black holes interpolate continuously between the Kerr solution and rotating boson stars in D=4 spacetime dimensions. Here we provide details on their construction, discussing properties of the ansatz, the field equations, the boundary conditions and the numerical strategy. Then, we present an overview of the parameter space of the solutions, and describe in detail the space-time structure of the black holes exterior geometry and of the scalar field for a sample of reference solutions. Phenomenological properties of potential astrophysical interest are also discussed, and the stability properties and possible generalizations are commented on. As supplementary material to this paper we make available numerical data files for the sample of reference solutions discussed, for public use.
A. Jacholkowska; G. Lamanna; E. Nuss; J. Bolmont; C. Adloff; J. Alcaraz; R. Battiston; P. Brun; W. J. Burger; V. Choutko; G. Coignet; A. Falvard; E. Flandrini; L. Girard; C. Goy; K. Jedamzik; R. Kossakowski; G. Moultaka; S. Natale; J. Pochon; M. Pohl; S. Rosier-Lees; M. Sapinski; I. Sevilla Noarbe; JP. Vialle
2006-05-23T23:59:59.000Z
The detection of non-baryonic dark matter through its gamma-ray annihilation in the centre of our galaxy has been studied. The gamma fluxes according to different models have been simulated and compared to those expected to be observed with the Alpha Magnetic Spectrometer (AMS), during a long-term mission on board of the International Space Station. Under the assumption that the dark matter halo is composed of the lightest, stable supersymmetric particle, the neutralino, the results of the simulations in the framework of mSUGRA models, show that with a cuspy dark matter halo or a clumpy halo, the annihilation gamma-ray signal would be detected by AMS. More optimistic perspectives are obtained with the Anomaly Mediated Supersymmetry Breaking (AMSB) model. The latter leads also to a cosmologically important 6Li abundance. Finally, the discovery potential for the massive Kaluza-Klein dark matter candidates has been evaluated and their detection looks feasible.
Adam R. Brown
2015-04-30T23:59:59.000Z
The non-perturbative instabilities of hot Kaluza-Klein spacetime are investigated. In addition to the known instability of hot space (the nucleation of 4D black holes) and the known instability of KK space (the nucleation of bubbles of nothing by quantum tunneling), we find two new instabilities: the nucleation of 5D black holes, and the nucleation of bubbles of nothing by thermal fluctuation. These four instabilities are controlled by two Euclidean instantons, with each instanton doing double duty via two inequivalent analytic continuations; thermodynamic instabilities of one are shown to be related to mechanical instabilities of the other. I also construct bubbles of nothing that are formed by a hybrid process involving both thermal fluctuation and quantum tunneling. There is an exact high-temperature/low-temperature duality that relates the nucleation of black holes to the nucleation of bubbles of nothing.
Feedback suppression of rotating external kink instabilities in the presence of noise
Hanson, Jeremy M.; De Bono, Bryan; James, Royce W.; Levesque, Jeffrey P.; Mauel, Michael E.; Maurer, David A.; Navratil, Gerald A.; Pedersen, Thomas Sunn; Shiraki, Daisuke [Applied Physics and Applied Mathematics, Columbia University, 200 S. W. Mudd Building - MC 4701, 500 W. 120th Street, New York, New York 10027 (United States)
2008-08-15T23:59:59.000Z
The authors report on the first experimental demonstration of active feedback suppression of rotating external kink modes near the ideal wall limit in a tokamak using Kalman filtering to discriminate the n=1 kink mode from background noise. The Kalman filter contains an internal model that captures the dynamics of a rotating, growing n=1 mode. Suppression of the external kink mode is demonstrated over a broad range of phase angles between the sensed mode and applied control field, and performance is robust at noise levels that render proportional gain feedback ineffective. Suppression of the kink mode is accomplished without excitation of higher frequencies as was observed in previous experiments using lead-lag loop compensation [A. J. Klein et al., Phys Plasmas 12, 040703 (2005)].
M5-Branes, D4-Branes and Quantum 5D super-Yang-Mills
Neil Lambert; Constantinos Papageorgakis; Maximilian Schmidt-Sommerfeld
2011-02-22T23:59:59.000Z
We revisit the relation of the six-dimensional (2,0) M5-brane Conformal Field Theory compactified on a circle to 5D maximally supersymmetric Yang-Mills Gauge Theory. We show that in the broken phase 5D super-Yang-Mills contains a spectrum of soliton states that can be identified with the complete Kaluza-Klein modes of an M2-brane ending on the M5-branes. This provides evidence that the (2,0) theory on a circle is equivalent to 5D super-Yang-Mills with no additional UV degrees of freedom, suggesting that the latter is in fact a well-defined quantum theory and possibly finite.
Shuang-Qing Wu
2008-09-08T23:59:59.000Z
The Dirac equation for the electron around a five-dimensional rotating black hole with two different angular momenta is separated into purely radial and purely angular equations. The general solution is expressed as a superposition of solutions derived from these two decoupled ordinary differential equations. By separating variables for the massive Klein-Gordon equation in the same space-time background, I derive a simple and elegant form for the Stackel-Killing tensor, which can be easily written as the square of a rank-three Killing-Yano tensor. I have also explicitly constructed a symmetry operator that commutes with the scalar Laplacian by using the Stackel-Killing tensor, and the one with the Dirac operator by the Killing-Yano tensor admitted by the five-dimensional Myers-Perry metric, respectively.
Spinless Quantum Field Theory and Interpretation
Dong-Sheng Wang
2013-03-07T23:59:59.000Z
Quantum field theory is mostly known as the most advanced and well-developed theory in physics, which combines quantum mechanics and special relativity consistently. In this work, we study the spinless quantum field theory, namely the Klein-Gordon equation, and we find that there exists a Dirac form of this equation which predicts the existence of spinless fermion. For its understanding, we start from the interpretation of quantum field based on the concept of quantum scope, we also extract new meanings of wave-particle duality and quantum statistics. The existence of spinless fermion is consistent with spin-statistics theorem and also supersymmetry, and it leads to several new kinds of interactions among elementary particles. Our work contributes to the study of spinless quantum field theory and could have implications for the case of higher spin.
Geometric Constraint in Brane-World
E. M. Monte
2006-02-15T23:59:59.000Z
The brane-worlds model was inspired partly by Kaluza-Klein's theory, where the gravitation and the gauge fields are obtained of a geometry of higher dimension (bulk). Such a model has been showing positive in the sense of we find perspectives and probably deep modifications in the physics, such as: Unification in a scale TeV, quantum gravity in this scale and deviation of Newton's law for small distances. One of the principles of this model is to suppose a space-time embedded in a bulk of high dimension. In this note it is shown, basing on the theorem of Collinson-Szekeres, that the space-time of Schwarzschild cannot be embedded locally and isometrically in a bulk of five dimensions with constant curvature,(for example ADS-5). From the point of view of the semi-Riemannian geometry this last result consists constraints to the model brane-world.
Jonathan E. Martin; Harvey S. Reall
2009-02-19T23:59:59.000Z
Eleven-dimensional supergravity admits non-supersymmetric solutions of the form AdS(5)xM(6) where M(6) is a positive Kahler-Einstein space. We show that the necessary and sufficient condition for such solutions to be stable against linearized bosonic supergravity perturbations can be expressed as a condition on the spectrum of the Laplacian acting on (1,1)-forms on M(6). For M(6)=CP(3), this condition is satisfied, although there are scalars saturating the Breitenlohner-Freedman bound. If M(6) is a product S(2)xM(4) (where M(4) is Kahler-Einstein) then there is an instability if M(4) has a continuous isometry. We show that a potential non-perturbative instability due to 5-brane nucleation does not occur. The bosonic Kaluza-Klein spectrum is determined in terms of eigenvalues of operators on M(6).
SNe Ia tests of quintessence tracker cosmology in an anisotropic background
Miranda, W. [Instituto Federal da Bahia, Paulo Afonso, Bahia (Brazil); Carneiro, S.; Pigozzo, C., E-mail: welber.miranda@ifba.edu.br, E-mail: saulo.carneiro@pq.cnpq.br, E-mail: cpigozzo@ufba.br [Instituto de Física, Universidade Federal da Bahia, Salvador, Bahia (Brazil)
2014-07-01T23:59:59.000Z
We investigate the observational effects of a quintessence model in an anisotropic spacetime. The anisotropic metric is a non-rotating particular case of a generalized Gödel's metric and is classified as Bianchi III. This metric is an exact solution of the Einstein-Klein-Gordon field equations with an anisotropic scalar field ?, which is responsible for the anisotropy of the spacetime geometry. We test the model against observations of type Ia supernovae, analyzing the SDSS dataset calibrated with the MLCS2k2 fitter, and the results are compared to standard quintessence models with Ratra-Peebles potentials. We obtain a good agreement with observations, with best values for the matter and curvature density parameters ?{sub M} = 0.29 and ?{sub k}= 0.01 respectively. We conclude that present SNe Ia observations cannot, alone, distinguish a possible anisotropic axis in the cosmos.
Science at the Theatre - Extreme Science - Promo Video
Klein, Spencer
2013-05-29T23:59:59.000Z
On Feb. 27 at 7 pm at the Berkeley Repertory Theatre, join four Berkeley Lab scientists as they discuss extreme science -- and what it means to you. Topics include: Neutrino hunting in Antarctica. Learn why Spencer Klein goes to the ends of the Earth to search for these ghostly particles. From Chernobyl to Central Asia, Tamas Torok travels the globe to study microbial diversity in extreme environments. Andrew Minor uses the world's most advanced electron microscopes to explore materials at ultrahigh stresses and in harsh environments. And microbes that talk to computers? Caroline Ajo-Franklin is pioneering cellular-electrical connections that could help transform sunlight into fuel. Go here for more information and to view videos of previous Science at the Theater events: http://www.lbl.gov/LBL-PID/fobl/
Polarized Deep Inelastic Scattering Off the "Neutron" From Gauge/String Duality
Jian-Hua Gao; Zong-Gang Mou
2010-05-25T23:59:59.000Z
We investigate deep inelastic scattering off the polarized "neutron" using gauge/string duality. The "neutron" corresponds to a supergravity mode of the neutral dilatino. Through introducing the Pauli interaction term into the action in $\\textrm{AdS}_{5}$ space, we calculate the polarized deep inelastic structure functions of the "neutron" in supergravity approximation at large t' Hooft coupling $\\lambda$ and finite $x$ with $\\lambda^{-1/2}\\ll xneutron" are power suppressed at the same order as the ones of the "proton." Especially, we find the Burkhardt-Cottingham-like sum rule, which is satisfied in the work by Gao and Xiao, is broken due to the Pauli interaction term. We also illustrate how such a Pauli interaction term can arise naturally from higher dimensional fermion-graviton coupling through the usual Kaluza-Klein reduction.
E. V. Abakumova; M. N. Achasov; D. E. Berkaev; V. V. Kaminsky; N. Yu. Muchnoi; E. A. Perevedentsev; E. E. Pyata; Yu. M. Shatunov
2012-11-01T23:59:59.000Z
The experiment on laser light backscattering on relativistic electrons was carried out at the VEPP-2000 collider. Laser radiation ({\\lambda}0 10.6 {\\mu}m) was scattered head-on the 990 MeV electrons inside the dipole magnet, where an electron orbit radius is about 140 cm. The energies of backscattered photons were measured by the HPGe detector. It was observed experimentally that due to the presence of magnetic field, energy spectrum of backscattered photons differs from the Klein-Nishina cross section. The explanation of the effect is proposed in terms of classical electrodynamics. Moreover, it appears that the exact QED predictions for the phenomenon were done more than 40 years ago.
Time delay for dispersive systems in quantum scattering theory
Rafael Tiedra de Aldecoa
2008-10-06T23:59:59.000Z
We consider time delay and symmetrised time delay (defined in terms of sojourn times) for quantum scattering pairs $\\{H_0=h(P),H\\}$, where $h(P)$ a dispersive operator of hypoelliptic-type. For instance $h(P)$ can be one of the usual elliptic operators such as the Schr\\"odinger operator $h(P)=P^2$ or the square-root Klein-Gordon operator $h(P)=\\sqrt{1+P^2}$. We show under general conditions that the symmetrised time delay exists for all smooth even localization functions. It is equal to the Eisenbud-Wigner time delay plus a contribution due to the non-radial component of the localization function. If the scattering operator $S$ commutes with some function of the velocity operator $\
Extremal Static AdS Black Hole/CFT Correspondence in Gauged Supergravities
H. Lu; Jianwei Mei; C. N. Pope; J. Vazquez-Poritz
2009-01-13T23:59:59.000Z
A recently proposed holographic duality allows the Bekenstein-Hawking entropy of extremal rotating black holes to be calculated microscopically, by applying the Cardy formula to the two-dimensional chiral CFTs associated with certain reparameterisations of azimuthal angular coordinates in the solutions. The central charges are proportional to the angular momenta of the black hole, and so the method degenerates in the case of static (non-rotating) black holes. We show that the method can be extended to encompass such charged static extremal AdS black holes by using consistent Kaluza-Klein sphere reduction ansatze to lift them to exact solutions in the low-energy limits of string theory or M-theory, where the electric charges become reinterpreted as angular momenta associated with internal rotations in the reduction sphere. We illustrate the procedure for the examples of extremal charged static AdS black holes in four, five, six and seven dimensions.
Self-force via energy-momentum and angular momentum balance equations
Yurij Yaremko
2012-07-20T23:59:59.000Z
The radiation reaction for a point-like charge coupled to a massive scalar field is considered. The retarded Green's function associated with the Klein-Gordon wave equation has support not only on the future light cone of the emission point (direct part), but extends inside the light cone as well (tail part). Dirac's scheme of decomposition of the retarded electromagnetic field into the "mean of the advanced and retarded field" and the "radiation" field is adapted to theories where Green's function consists of the direct and the tail parts. The Harish-Chandra equation of motion of radiating scalar charge under the influence of an external force is obtained. This equation includes effect of particle's own field. The self force produces a time-changing inertial mass.
Dilatonic wormholes: construction, operation, maintenance and collapse to black holes
Sean A. Hayward; Sung-Won Kim; Hyunjoo Lee
2001-10-18T23:59:59.000Z
The CGHS two-dimensional dilaton gravity model is generalized to include a ghost Klein-Gordon field, i.e. with negative gravitational coupling. This exotic radiation supports the existence of static traversible wormhole solutions, analogous to Morris-Thorne wormholes. Since the field equations are explicitly integrable, concrete examples can be given of various dynamic wormhole processes, as follows. (i) Static wormholes are constructed by irradiating an initially static black hole with the ghost field. (ii) The operation of a wormhole to transport matter or radiation between the two universes is described, including the back-reaction on the wormhole, which is found to exhibit a type of neutral stability. (iii) It is shown how to maintain an operating wormhole in a static state, or return it to its original state, by turning up the ghost field. (iv) If the ghost field is turned off, either instantaneously or gradually, the wormhole collapses into a black hole.
High-Energy String Scattering Amplitudes and Signless Stirling Number Identity
Jen-Chi Lee; Catherine H. Yan; Yi Yang
2012-07-18T23:59:59.000Z
We give a complete proof of a set of identities (7) proposed recently from calculation of high-energy string scattering amplitudes. These identities allow one to extract ratios among high-energy string scattering amplitudes in the fixed angle regime from high-energy amplitudes in the Regge regime. The proof is based on a signless Stirling number identity in combinatorial theory. The results are valid for arbitrary real values $L$ rather than only for $L=0,1$ proved previously. The identities for non-integer real value $L$ were recently shown to be realized in high-energy compactified string scattering amplitudes [He S., Lee J.C., Yang Y., arXiv:1012.3158]. The parameter $L$ is related to the mass level of an excited string state and can take non-integer values for Kaluza-Klein modes.
WIMP identification through a combined measurement of axial and scalar couplings
Bertone, G; Collar, J I; Odom, B
2007-01-01T23:59:59.000Z
We study the prospects for detecting Weakly Interacting Massive Particles (WIMPs), in a number of phenomenological scenarios, with a detector composed of a target simultaneously sensitive to both spin-dependent and spin-independent couplings, as is the case of COUPP (Chicagoland Observatory for Underground Particle Physics). First, we show that sensitivity to both couplings optimizes chances of initial WIMP detection. Second, we demonstrate that in case of detection, comparison of the signal on two complementary targets, such as in COUPP CF3I and C4F10 bubble chambers, allows a significantly more precise determination of the dark matter axial and scalar couplings. This strategy would provide crucial information on the nature of the WIMPs, and possibly allow discrimination between neutralino and Kaluza-Klein dark matter.
WIMP identification through a combined measurement of axial and scalar couplings
G. Bertone; D. G. Cerdeno; J. I. Collar; B. Odom
2007-07-23T23:59:59.000Z
We study the prospects for detecting Weakly Interacting Massive Particles (WIMPs), in a number of phenomenological scenarios, with a detector composed of a target simultaneously sensitive to both spin-dependent and spin-independent couplings, as is the case of COUPP (Chicagoland Observatory for Underground Particle Physics). First, we show that sensitivity to both couplings optimizes chances of initial WIMP detection. Second, we demonstrate that in case of detection, comparison of the signal on two complementary targets, such as in COUPP CF3I and C4F10 bubble chambers, allows a significantly more precise determination of the dark matter axial and scalar couplings. This strategy would provide crucial information on the nature of the WIMPs, and possibly allow discrimination between neutralino and Kaluza-Klein dark matter.
The problem of space in the light of relativity: the views of H. Weyl and E. Cartan
Erhard Scholz
2014-07-21T23:59:59.000Z
Starting from a short review of the "classical" space problem in the sense of the 19th century (Helmholtz -- Lie -- Klein) it is discussed how the challenges posed by special and general relativity to the classical analysis were taken up by Hermann Weyl and Elie Cartan. Both mathematicians reconsidered the space problem from the point of view of transformations operating in the infinitesimal neighbourhoods of a manifold (spacetime). In a short outlook we survey further developments in mathematics and physics of the second half of the 20th century, in which core ideas of Weyl's and/or Cartan's analysis of the space problem were further investigated (mathematics) or incorporated into basic theories (physics).
Pragmatic SAE procedure in the Schrodinger equation for the inverse-square-like potentials
Nadareishvili, Teimuraz
2012-01-01T23:59:59.000Z
The Self-Adjoint Extension in the Schrodinger equation for potentials behaved as an attractive inverse square at the origin is critically reviewed. Original results are also presented. It is shown that the additional non-regular solutions must be retained for definite interval of parameters, which requires a necessity of performing a Self-Adjoint Extension (SAE) procedure of radial Hamiltonian.The Pragmatic approach is used and some of its consequences are considered for wide class of transitive potentials. Our consideration is based on the established earlier by us a boundary condition for the radial wave function and the corresponding consequences are derived. Various relevant applications are presented as well. They are: inverse square potential in the Schrodinger equation is solved when the additional non-regular solution is retained. Valence electron model and the Klein-Gordon equation with the Coulomb potential is considered and the hydrino -like levels are discussed.
Pragmatic SAE procedure in the Schrodinger equation for the inverse-square-like potentials
Teimuraz Nadareishvili; Anzor Khelashvili
2012-10-14T23:59:59.000Z
The Self-Adjoint Extension in the Schrodinger equation for potentials behaved as an attractive inverse square at the origin is critically reviewed. Original results are also presented. It is shown that the additional non-regular solutions must be retained for definite interval of parameters, which requires a necessity of performing a Self-Adjoint Extension (SAE) procedure of radial Hamiltonian.The Pragmatic approach is used and some of its consequences are considered for wide class of transitive potentials. Our consideration is based on the established earlier by us a boundary condition for the radial wave function and the corresponding consequences are derived. Various relevant applications are presented as well. They are: inverse square potential in the Schrodinger equation is solved when the additional non-regular solution is retained. Valence electron model and the Klein-Gordon equation with the Coulomb potential is considered and the hydrino -like levels are discussed.
Field Theory on Curved Noncommutative Spacetimes
Alexander Schenkel; Christoph F. Uhlemann
2010-08-03T23:59:59.000Z
We study classical scalar field theories on noncommutative curved spacetimes. Following the approach of Wess et al. [Classical Quantum Gravity 22 (2005), 3511 and Classical Quantum Gravity 23 (2006), 1883], we describe noncommutative spacetimes by using (Abelian) Drinfel'd twists and the associated *-products and *-differential geometry. In particular, we allow for position dependent noncommutativity and do not restrict ourselves to the Moyal-Weyl deformation. We construct action functionals for real scalar fields on noncommutative curved spacetimes, and derive the corresponding deformed wave equations. We provide explicit examples of deformed Klein-Gordon operators for noncommutative Minkowski, de Sitter, Schwarzschild and Randall-Sundrum spacetimes, which solve the noncommutative Einstein equations. We study the construction of deformed Green's functions and provide a diagrammatic approach for their perturbative calculation. The leading noncommutative corrections to the Green's functions for our examples are derived.
Geometric entropy and edge modes of the electromagnetic field
William Donnelly; Aron C. Wall
2015-06-18T23:59:59.000Z
We calculate the vacuum entanglement entropy of Maxwell theory in a class of curved spacetimes by Kaluza-Klein reduction of the theory onto a two-dimensional base manifold. Using two-dimensional duality, we express the geometric entropy of the electromagnetic field as the entropy of a tower of scalar fields, constant electric and magnetic fluxes, and a contact term, whose leading order divergence was discovered by Kabat. The complete contact term takes the form of one negative scalar degree of freedom confined to the entangling surface. We show that the geometric entropy agrees with a statistical definition of entanglement entropy that includes edge modes: classical solutions determined by their boundary values on the entangling surface. This resolves a longstanding puzzle about the statistical interpretation of the contact term in the entanglement entropy. We discuss the implications of this negative term for black hole thermodynamics and the renormalization of Newton's constant.
Superradiance and black hole bomb in five-dimensional minimal ungauged supergravity
Aliev, Alikram N., E-mail: alikram.n.aliev@gmail.com [Faculty of Engineering and Architecture, Yeni Yüzy?l University, Cevizliba?-Topkap?, Istanbul, 34010 Turkey (Turkey)
2014-11-01T23:59:59.000Z
We examine the black hole bomb model which consists of a rotating black hole of five-dimenensional minimal ungauged supergravity and a reflecting mirror around it. For low-frequency scalar perturbations, we find solutions to the Klein-Gordon equation in the near-horizon and far regions of the black hole spacetime. To avoid solutions with logarithmic terms, we assume that the orbital quantum number l takes on nearly, but not exactly, integer values and perform the matching of these solutions in an intermediate region. This allows us to calculate analytically the frequency spectrum of quasinormal modes, taking the limits as l approaches even or odd integers separately. We find that all l modes of scalar perturbations undergo negative damping in the regime of superradiance, resulting in exponential growth of their amplitudes. Thus, the model under consideration would exhibit the superradiant instability, eventually behaving as a black hole bomb in five dimensions.
Chiral tunneling in single and bilayer graphene
T. Tudorovskiy; K. J. A. Reijnders; M. I. Katsnelson
2011-06-15T23:59:59.000Z
We review chiral (Klein) tunneling in single-layer and bilayer graphene and present its semiclassical theory, including the Berry phase and the Maslov index. Peculiarities of the chiral tunneling are naturally explained in terms of classical phase space. In a one-dimensional geometry we reduced the original Dirac equation, describing the dynamics of charge carriers in the single layer graphene, to an effective Schr\\"odinger equation with a complex potential. This allowed us to study tunneling in details and obtain analytic formulas. Our predictions are compared with numerical results. We have also demonstrated that, for the case of asymmetric n-p-n junction in single layer graphene, there is total transmission for normal incidence only, side resonances are suppressed.
Rotating black holes in a draining bathtub: superradiant scattering of gravity waves
Mauricio Richartz; Angus Prain; Stefano Liberati; Silke Weinfurtner
2015-06-05T23:59:59.000Z
In a draining rotating fluid flow background, surface perturbations behave as a scalar field on a rotating effective black hole spacetime. We propose a new model for the background flow which takes into account the varying depth of the water. Numerical integration of the associated Klein-Gordon equation using accessible experimental parameters shows that gravity waves in an appropriate frequency range are amplified through the mechanism of superradiance. Our numerical results suggest that the observation of this phenomenon in a common fluid mechanical system is within experimental reach. Unlike the case of wave scattering around Kerr black holes, which depends only on one dimensionless background parameter (the ratio $a/M$ between the specific angular momentum and the mass of the black hole), our system depends on two dimensionless background parameters, namely the normalized angular velocity and surface gravity at the effective black hole horizon.
Generalised Eisenhart lift of the Toda chain
Cariglia, Marco, E-mail: marco@iceb.ufop.br [DEFIS, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, 35400-000 Ouro Preto, MG (Brazil)] [DEFIS, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, 35400-000 Ouro Preto, MG (Brazil); Gibbons, Gary, E-mail: g.w.gibbons@damtp.cam.ac.uk [DAMTP, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA (United Kingdom)] [DAMTP, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA (United Kingdom)
2014-02-15T23:59:59.000Z
The Toda chain of nearest neighbour interacting particles on a line can be described both in terms of geodesic motion on a manifold with one extra dimension, the Eisenhart lift, or in terms of geodesic motion in a symmetric space with several extra dimensions. We examine the relationship between these two realisations and discover that the symmetric space is a generalised, multi-particle Eisenhart lift of the original problem that reduces to the standard Eisenhart lift. Such generalised Eisenhart lift acts as an inverse Kaluza-Klein reduction, promoting coupling constants to momenta in higher dimension. In particular, isometries of the generalised lift metric correspond to energy preserving transformations that mix coordinates and coupling constants. A by-product of the analysis is that the lift of the Toda Lax pair can be used to construct higher rank Killing tensors for both the standard and generalised lift metrics.
Quantum probes of timelike naked singularities in $2+1-$ dimensional power - law spacetimes
O. Gurtug; M. Halilsoy; S. Habib Mazharimousavi
2015-01-29T23:59:59.000Z
The formation of naked singularities in $2+1-$ dimensional power - law spacetimes in linear Einstein-Maxwell and Einstein-scalar theories sourced by azimuthally symmetric electric field and a self-interacting real scalar field respectively, are considered in view of quantum mechanics. Quantum test fields obeying the Klein-Gordon and Dirac equations are used to probe the classical timelike naked singularities developed at $r=0$. We show that when the classically singular spacetimes probed with scalar waves, the considered spacetimes remains singular. However, the spinorial wave probe of the singularity in the metric of a self-interacting real scalar field remains quantum regular. The notable outcome in this study is that the quantum regularity/singularity can not be associated with the energy conditions.
Gamma Ray Burst as Sources of Exotic Particles
Morgan, Ian; De Pree, Erin; Tennyson, Kevin
2015-01-01T23:59:59.000Z
We consider the possible production of stable lightest first level KK particle (LKP) in baryonic gamma ray bursts (GRB) out flows. We numerically computed the energy-dependent cross-sections of Kaluza-Klein (KK) excitations for the Standard Model gauge bosons, photon and Z. Next, we determined the feasibility of producing these KK excitations in gamma-ray emitting regions of GRBs. We found that a GRB fireball that accelerates baryons to energies greater than 10^14 eV could produce KK excitations out to approximately 10^12 cm from the central engine, indicating that GRBs may be a significant source of the LKP. Finally, we explore the potential observational consequences of our results.
Hydrodynamics of the physical vacuum: dark matter is an illusion
Valeriy I. Sbitnev
2015-06-23T23:59:59.000Z
The relativistic hydrodynamical equations are being examined with the aim of extracting the quantum-mechanical equations (the relativistic Klein-Gordon equation and the Schr\\"odinger equation in the non-relativistic limit). In both cases it is required to get the quantum potential, which follows from pressure gradients within a superfluid vacuum medium. This special fluid, endowed with viscosity allows to describe emergence of the flat orbital speeds of spiral galaxies. The viscosity averaged on time vanishes, but its variance is different from zero. It is a function fluctuating about zero. Therefore the flattening is the result of the energy exchange of the torque with zero-point fluctuations of the physical vacuum on the ultra-low frequencies.
Correction terms for propagators and d'Alembertians due to spacetime discreteness
Steven Johnston
2014-11-10T23:59:59.000Z
The causal set approach to quantum gravity models spacetime as a discrete structure - a causal set. Recent research has led to causal set models for the retarded propagator for the Klein-Gordon equation and the d'Alembertian operator. These models can be compared to their continuum counterparts via a sprinkling process. It has been shown that the models agree exactly with the continuum quantities in the limit of an infinite sprinkling density - the continuum limit. This paper obtains the correction terms for these models for sprinkled causal sets with a finite sprinkling density. These correction terms are an important step towards testable differences between the continuum and discrete models that could provide evidence of spacetime discreteness.
Are black holes a serious threat to scalar field dark matter models?
Juan Barranco; Argelia Bernal; Juan Carlos Degollado; Alberto Diez-Tejedor; Miguel Megevand; Miguel Alcubierre; Darío Núñez; Olivier Sarbach
2011-08-03T23:59:59.000Z
Classical scalar fields have been proposed as possible candidates for the dark matter component of the universe. Given the fact that super-massive black holes seem to exist at the center of most galaxies, in order to be a viable candidate for the dark matter halo a scalar field configuration should be stable in the presence of a central black hole, or at least be able to survive for cosmological time-scales. In the present work we consider a scalar field as a test field on a Schwarzschild background, and study under which conditions one can obtain long-lived configurations. We present a detailed study of the Klein-Gordon equation in the Schwarzschild spacetime, both from an analytical and numerical point of view, and show that indeed there exist quasi-stationary solutions that can remain surrounding a black hole for large time-scales.
Construction and physical properties of Kerr black holes with scalar hair
Herdeiro, Carlos
2015-01-01T23:59:59.000Z
Kerr black holes with scalar hair are solutions of the Einstein-Klein-Gordon field equations describing regular (on and outside an event horizon), asymptotically flat black holes with scalar hair (arXiv:1403.2757). These black holes interpolate continuously between the Kerr solution and rotating boson stars in D=4 spacetime dimensions. Here we provide details on their construction, discussing properties of the ansatz, the field equations, the boundary conditions and the numerical strategy. Then, we present an overview of the parameter space of the solutions, and describe in detail the space-time structure of the black holes exterior geometry and of the scalar field for a sample of reference solutions. Phenomenological properties of potential astrophysical interest are also discussed, and the stability properties and possible generalizations are commented on. As supplementary material to this paper we make available numerical data files for the sample of reference solutions discussed, for public use.
Biquaternions algebra and its applications by solving of some theoretical physics equations
L. A. Alexeyeva
2013-02-03T23:59:59.000Z
The functional space of biquaternions is considered on Minkovskiy space. The scalar-vector biquaternions representation is used which was offered by W. Hamilton for quaternions. With introduction of differential operator - a mutual complex gradient (bigradients), which generalize the notion of a gradient on biquaternions space, biquaternionic wave (biwave) equations are considered, their invariance for group of the Lorentz-Puancare transformations is shown and their generalized solutions are obtained. Biquaternionic form of generalized Maxwell-Dirac equation is constructed and its solutions are researched on base of the differential biquaternions algebra. Its generalized decisions are built with use of scalar potential. The new equation for these potential are constructed which unites known equations of quantum mechanics (Klein-Gordon and Schrodinger Eq.). The nonstationary, steady-state and harmonic on time scalar fields and generated by them the spinors and spinors fields in biquaternionic form are constructed.