Phenomenological aspects of no-scale inflation models
Abstract
We discuss phenomenological aspects of inflationary models wiith a no-scale supergravity Kähler potential motivated by compactified string models, in which the inflaton may be identified either as a Kähler modulus or an untwisted matter field, focusing on models that make predictions for the scalar spectral index ns and the tensor-to-scalar ratio r that are similar to the Starobinsky model. We discuss possible patterns of soft supersymmetry breaking, exhibiting examples of the pure no-scale type m0 = B0 = A0 = 0, of the CMSSM type with universal A0 and m0 ≠ 0 at a high scale, and of the mSUGRA type with A0 = B0 + m0 boundary conditions at the high input scale. These may be combined with a non-trivial gauge kinetic function that generates gaugino masses m1/2 ≠ 0, or one may have a pure gravity mediation scenario where trilinear terms and gaugino masses are generated through anomalies. We also discuss inflaton decays and reheating, showing possible decay channels for the inflaton when it is either an untwisted matter field or a Kähler modulus. Reheating is very efficient if a matter field inflaton is directly coupled to MSSM fields, and both candidates lead to sufficient reheating in themore »
- Authors:
-
- King's College London (United Kingdom). Theoretical Particle Physics and Cosmology Group. Dept. of Physics; European Organization for Nuclear Research (CERN), Geneva (Switzerland). Theory Division
- Univ. of Minnesota, Minneapolis, MN (United States). William I. Fine Theoretical Physics Inst. School of Physics and Astronomy
- Texas A & M Univ., College Station, TX (United States). George P. and Cynthia W. Mitchell Inst. for Fundamental Physics and Astronomy; Houston Advanced Research Center (HARC), Woodlands, TX (United States). Astroparticle Physics Group; Academy of Athens (Greece). Division of Natural Sciences
- Publication Date:
- Research Org.:
- Univ. of Minnesota, Minneapolis, MN (United States); European Organization for Nuclear Research (CERN), Geneva (Switzerland); King's College, London (United Kingdom)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP); European Research Council (ERC); Science and Technology Facilities Council (STFC) (United Kingdom)
- OSTI Identifier:
- 1437112
- Grant/Contract Number:
- SC0011842; 267352; ST/J002798/1
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Cosmology and Astroparticle Physics
- Additional Journal Information:
- Journal Volume: 2015; Journal Issue: 10; Journal ID: ISSN 1475-7516
- Publisher:
- Institute of Physics (IOP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; inflation; particle physics; cosmology connection; supersymmetry and cosmology
Citation Formats
Ellis, John, Garcia, Marcos A. G., Nanopoulos, Dimitri V., and Olive, Keith A. Phenomenological aspects of no-scale inflation models. United States: N. p., 2015.
Web. doi:10.1088/1475-7516/2015/10/003.
Ellis, John, Garcia, Marcos A. G., Nanopoulos, Dimitri V., & Olive, Keith A. Phenomenological aspects of no-scale inflation models. United States. https://doi.org/10.1088/1475-7516/2015/10/003
Ellis, John, Garcia, Marcos A. G., Nanopoulos, Dimitri V., and Olive, Keith A. Thu .
"Phenomenological aspects of no-scale inflation models". United States. https://doi.org/10.1088/1475-7516/2015/10/003. https://www.osti.gov/servlets/purl/1437112.
@article{osti_1437112,
title = {Phenomenological aspects of no-scale inflation models},
author = {Ellis, John and Garcia, Marcos A. G. and Nanopoulos, Dimitri V. and Olive, Keith A.},
abstractNote = {We discuss phenomenological aspects of inflationary models wiith a no-scale supergravity Kähler potential motivated by compactified string models, in which the inflaton may be identified either as a Kähler modulus or an untwisted matter field, focusing on models that make predictions for the scalar spectral index ns and the tensor-to-scalar ratio r that are similar to the Starobinsky model. We discuss possible patterns of soft supersymmetry breaking, exhibiting examples of the pure no-scale type m0 = B0 = A0 = 0, of the CMSSM type with universal A0 and m0 ≠ 0 at a high scale, and of the mSUGRA type with A0 = B0 + m0 boundary conditions at the high input scale. These may be combined with a non-trivial gauge kinetic function that generates gaugino masses m1/2 ≠ 0, or one may have a pure gravity mediation scenario where trilinear terms and gaugino masses are generated through anomalies. We also discuss inflaton decays and reheating, showing possible decay channels for the inflaton when it is either an untwisted matter field or a Kähler modulus. Reheating is very efficient if a matter field inflaton is directly coupled to MSSM fields, and both candidates lead to sufficient reheating in the presence of a non-trivial gauge kinetic function.},
doi = {10.1088/1475-7516/2015/10/003},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 10,
volume = 2015,
place = {United States},
year = {Thu Oct 01 00:00:00 EDT 2015},
month = {Thu Oct 01 00:00:00 EDT 2015}
}
Web of Science
Figures / Tables:
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Radiative Production of Non-thermal Dark Matter
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Starobinsky Inflation: From Non-SUSY to SUGRA Realizations
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