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Title: Dark energy and the MSSM

Abstract

We consider the coupling of quintessence to observable matter in supergravity and study the dynamics of both supersymmetry breaking and quintessence in this context. We investigate how the quintessence potential is modified by supersymmetry breaking and analyze the structure of the soft supersymmetry-breaking terms. We pay attention to their dependence on the quintessence field and to the electroweak symmetry breaking, i.e. the pattern of fermion masses at low energy within the minimal supersymmetric standard model (MSSM) coupled to quintessence. In particular, we compute explicitly how the fermion masses generated through the Higgs mechanism depend on the quintessence field for a general model of quintessence. Fifth force and equivalence principle violations are potentially present as the vacuum expectation values of the Higgs bosons become quintessence field dependent. We emphasize that equivalence principle violations are a generic consequence of the fact that, in the MSSM, the fermions couple differently to the two Higgs doublets. Finally, we also discuss how the scaling of the cold dark and baryonic matter energy density is modified and comment on the possible variation of the gauge coupling constants, among which is the fine structure constant, and of the proton-electron mass ratio.

Authors:
;  [1];  [2]
  1. Service de Physique Theorique, CEA-Saclay, Gif/Yvette cedex, F-91191 (France)
  2. (France)
Publication Date:
OSTI Identifier:
21020349
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 8; Other Information: DOI: 10.1103/PhysRevD.75.083507; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; COUPLING; COUPLING CONSTANTS; ELECTRONS; ENERGY DENSITY; EQUIVALENCE PRINCIPLE; FINE STRUCTURE; HIGGS BOSONS; HIGGS MODEL; NONLUMINOUS MATTER; POTENTIALS; PROTONS; REST MASS; STANDARD MODEL; SUPERGRAVITY; SUPERSYMMETRY; SYMMETRY BREAKING

Citation Formats

Brax, Philippe, Martin, Jerome, and Institut d'Astrophysique de Paris, UMR 7095-CNRS, Universite Pierre et Marie Curie, 98bis boulevard Arago, 75014 Paris. Dark energy and the MSSM. United States: N. p., 2007. Web. doi:10.1103/PHYSREVD.75.083507.
Brax, Philippe, Martin, Jerome, & Institut d'Astrophysique de Paris, UMR 7095-CNRS, Universite Pierre et Marie Curie, 98bis boulevard Arago, 75014 Paris. Dark energy and the MSSM. United States. doi:10.1103/PHYSREVD.75.083507.
Brax, Philippe, Martin, Jerome, and Institut d'Astrophysique de Paris, UMR 7095-CNRS, Universite Pierre et Marie Curie, 98bis boulevard Arago, 75014 Paris. Sun . "Dark energy and the MSSM". United States. doi:10.1103/PHYSREVD.75.083507.
@article{osti_21020349,
title = {Dark energy and the MSSM},
author = {Brax, Philippe and Martin, Jerome and Institut d'Astrophysique de Paris, UMR 7095-CNRS, Universite Pierre et Marie Curie, 98bis boulevard Arago, 75014 Paris},
abstractNote = {We consider the coupling of quintessence to observable matter in supergravity and study the dynamics of both supersymmetry breaking and quintessence in this context. We investigate how the quintessence potential is modified by supersymmetry breaking and analyze the structure of the soft supersymmetry-breaking terms. We pay attention to their dependence on the quintessence field and to the electroweak symmetry breaking, i.e. the pattern of fermion masses at low energy within the minimal supersymmetric standard model (MSSM) coupled to quintessence. In particular, we compute explicitly how the fermion masses generated through the Higgs mechanism depend on the quintessence field for a general model of quintessence. Fifth force and equivalence principle violations are potentially present as the vacuum expectation values of the Higgs bosons become quintessence field dependent. We emphasize that equivalence principle violations are a generic consequence of the fact that, in the MSSM, the fermions couple differently to the two Higgs doublets. Finally, we also discuss how the scaling of the cold dark and baryonic matter energy density is modified and comment on the possible variation of the gauge coupling constants, among which is the fine structure constant, and of the proton-electron mass ratio.},
doi = {10.1103/PHYSREVD.75.083507},
journal = {Physical Review. D, Particles Fields},
number = 8,
volume = 75,
place = {United States},
year = {Sun Apr 15 00:00:00 EDT 2007},
month = {Sun Apr 15 00:00:00 EDT 2007}
}