منابع مشابه
Reheating as a surface effect.
We describe a new mechanism for reheating the Universe through evaporation of a surface charge of a fragmented inflaton condensate. We show that for a range of Yukawa coupling of the inflaton to the matter sector evaporation gives rise to a much smaller reheat temperature compared to the standard perturbative decay. As a consequence, reheating through a surface effect could solve the gravitino ...
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Finite temperature effects are important to be considered in the early Universe. Given the fact that there is no direct evidence for the particle content in the early Universe beyond the Standard Model (SM) of electroweak scale ∼ 100 GeV, and in cosmology there is no direct evidence of thermal history beyond the era of Big Bang Nucleosynthesis (BBN) ∼ 1 MeV, it becomes a challenging problem und...
متن کاملReheating of the Universe as holographic thermalization
Article history: Received 10 February 2016 Accepted 9 June 2016 Available online 14 June 2016 Editor: M. Trodden Assuming gauge/gravity correspondence we study reheating of the Universe using its holographic dual. Inflaton decay and thermalisation of the decay products correspond to collapse of a spherical shell and formation of a blackhole in the dual anti-de Sitter (AdS) spacetime. The reheat...
متن کاملChaotic Reheating
We discuss the structure of parametric resonance which occurs in the process of reheating after inflation with two interacting scalar fields. It is found that, for the case of a not too large coupling constant, a quasi-homogeneous part of the second, initially subdominant scalar field may not be neglected due to its stochastic growth during inflation. This fact has strong consequences for the r...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2002
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.89.091301