Constraints on moduli cosmology from the production of dark matter and baryon isocurvature fluctuations

Journal Article · Tue Dec 15 04:00:00 EST 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.80.123514· OSTI ID:21313569

Lemoine, Martin; Martin, Jerome ^[1]; Yokoyama, Jun'ichi ^[2]

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1. Institut d'Astrophysique de Paris, UMR 7095-CNRS, Universite Pierre et Marie Curie, 98bis boulevard Arago, 75014 Paris (France)
2. Research Center for the Early Universe (RESCEU), Graduate School of Science, University of Tokyo, Tokyo, 113-0033 (Japan) and Institute for the Physics and Mathematics of the Universe (IPMU), University of Tokyo, Kashiwa, Chiba 277-8568 (Japan)

We set constraints on moduli cosmology from the production of dark matter - radiation and baryon -radiation isocurvature fluctuations through modulus decay, assuming the modulus remains light during inflation. We find that the moduli problem becomes worse at the perturbative level as a significant part of the parameter space m{sub {sigma}} (modulus mass) - {sigma}{sub inf} (modulus vacuum expectation value at the end of inflation) is constrained by the nonobservation of significant isocurvature fluctuations. We discuss in detail the evolution of the modulus vacuum expectation value and perturbations, in particular, the consequences of Hubble scale corrections to the modulus potential, and the stochastic motion of the modulus during inflation. We show, in particular, that a high modulus mass scale m{sub {sigma}} > or approx. 100 TeV, which allows the modulus to evade big bang nucleosynthesis constraints is strongly constrained at the perturbative level. We find that generically, solving the moduli problem requires the inflationary scale to be much smaller than 10{sup 13} GeV.

• OSTI ID: 21313569
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 12 Vol. 80; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
79 ASTRONOMY AND ASTROPHYSICS
BARYONS
CORRECTIONS
COSMOLOGY
DISTURBANCES
EEV RANGE
EVOLUTION
EXPECTATION VALUE
FLUCTUATIONS
HUBBLE EFFECT
INFLATIONARY UNIVERSE
MASS
NONLUMINOUS MATTER
NUCLEOSYNTHESIS
PARTICLE DECAY
PERTURBATION THEORY
POTENTIALS
SPACE
STOCHASTIC PROCESSES
TEV RANGE 100-1000