Journal
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Volume -, Issue 3, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1475-7516/2013/03/002
Keywords
inflation; particle physics - cosmology connection; physics of the early universe
Funding
- Ministry of Education, Science, Sports, and Culture (MEXT), Japan [21111006, 22244030]
- World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan
- JSPS
- Grants-in-Aid for Scientific Research [22244030] Funding Source: KAKEN
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The inflaton must convert its energy into radiation after inflation, which, in a conventional scenario, is caused by the perturbative inflaton decay. This reheating process would be much more complicated in some cases: the decay products obtain masses from an oscillating inflaton and thermal environment, and hence the conventional reheating scenario can be modified. We study in detail processes of particle production from the inflaton, their subsequent thermalization and evolution of inflaton/plasma system by taking dissipation of the inflaton in a hot plasma into account. It is shown that the reheating temperature is significantly affected by these effects.
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