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Title: Reheating of the Universe as holographic thermalization

Abstract

Here, 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 reheating temperature is computed as the Hawking temperature of the developed blackhole probed by a dynamical boundary, and is determined by the inflaton energy density and the AdS radius, with corrections from the dynamics of the shell collapse. For given initial energy density of the inflaton field the holographic model gives significantly lower reheating temperature than the instant reheating scenario, while it is shown to be safely within phenomenological bounds.

Authors:
ORCiD logo;
Publication Date:
Research Org.:
California Institute of Technology (CalTech), Pasadena, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1257864
Alternate Identifier(s):
OSTI ID: 1360114; OSTI ID: 1598358
Grant/Contract Number:  
SC0011632
Resource Type:
Published Article
Journal Name:
Physics Letters B
Additional Journal Information:
Journal Name: Physics Letters B Journal Volume: 759 Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS

Citation Formats

Kawai, Shinsuke, and Nakayama, Yu. Reheating of the Universe as holographic thermalization. Netherlands: N. p., 2016. Web. https://doi.org/10.1016/j.physletb.2016.06.019.
Kawai, Shinsuke, & Nakayama, Yu. Reheating of the Universe as holographic thermalization. Netherlands. https://doi.org/10.1016/j.physletb.2016.06.019
Kawai, Shinsuke, and Nakayama, Yu. Mon . "Reheating of the Universe as holographic thermalization". Netherlands. https://doi.org/10.1016/j.physletb.2016.06.019.
@article{osti_1257864,
title = {Reheating of the Universe as holographic thermalization},
author = {Kawai, Shinsuke and Nakayama, Yu},
abstractNote = {Here, 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 reheating temperature is computed as the Hawking temperature of the developed blackhole probed by a dynamical boundary, and is determined by the inflaton energy density and the AdS radius, with corrections from the dynamics of the shell collapse. For given initial energy density of the inflaton field the holographic model gives significantly lower reheating temperature than the instant reheating scenario, while it is shown to be safely within phenomenological bounds.},
doi = {10.1016/j.physletb.2016.06.019},
journal = {Physics Letters B},
number = C,
volume = 759,
place = {Netherlands},
year = {2016},
month = {8}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1016/j.physletb.2016.06.019

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Works referenced in this record:

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