Production of massive particles during reheating

What is commonly called the reheat temperature, T[sub RH], is not the maximum temperature obtained after inflation. The maximum temperature is, in fact, much larger than T[sub RH]. As an application of this we consider the production of massive stable dark-matter particles of mass M[sub X] during re...

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Bibliographic Details
Published in:Physical review. D, Particles and fields Particles and fields, 1999-09, Vol.60 (6), Article 063504
Main Authors: Chung, Daniel J. H., Kolb, Edward W., Riotto, Antonio
Format: Article
Language:English
Subjects:
BARYONS
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
COSMIC RAY SOURCES
COSMOLOGICAL MODELS
COSMOLOGY
ELEMENTARY PARTICLES
FERMIONS
HADRONS
INFLATIONARY UNIVERSE
MATHEMATICAL MODELS
MATTER 661300 > Other Aspects of Physical Science-- (1992-)
NONLUMINOUS MATTER
PARTICLE PRODUCTION
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Summary:What is commonly called the reheat temperature, T[sub RH], is not the maximum temperature obtained after inflation. The maximum temperature is, in fact, much larger than T[sub RH]. As an application of this we consider the production of massive stable dark-matter particles of mass M[sub X] during reheating, and show that their abundance is suppressed as a power of T[sub RH]/M[sub X] rather than exp([minus]M[sub X]/T[sub RH]). We find that particles of mass as large as 2[times]10[sup 3] times the reheat temperature may be produced in interesting abundance. In addition to dark matter, our analysis is relevant for baryogenesis if the baryon asymmetry is produced by the baryon (or lepton) number violating decays of superheavy bosons, and also for relic ultra-high energy cosmic rays if decays of superheavy particles are responsible for the highest energy cosmic rays. [copyright] [ital 1999] [ital The American Physical Society]
ISSN:0556-2821
1089-4918
DOI:10.1103/PhysRevD.60.063504