Reheating of the Universe as holographic thermalization
- Creators
- Kawai, Shinsuke
- Nakayama, Yu
Abstract
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 typically gives lower reheating temperature than the instant reheating scenario, while it is shown to be safely within phenomenological bounds.
Additional Information
© 2016 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3. Received 10 February 2016, Accepted 9 June 2016, Available online 14 June 2016. We acknowledge helpful conversations with Andrzej Rostworowski and Shigeki Sugimoto. This work was supported in part by the National Research Foundation of Korea Grant-in-Aid for Scientific Research NRF-2015R1D1A1A01061507 (S.K.), a Sherman Fairchild Senior Research Fellowship at California Institute of Technology and DOE grant number de-sc0011632 as well as WPI Initiative, MEXT (Y.N.).Attached Files
Published - 1-s2.0-S0370269316302726-main.pdf
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Additional details
- Eprint ID
- 73287
- Resolver ID
- CaltechAUTHORS:20170105-165240181
- SCOAP3
- NRF-2015R1D1A1A01061507
- National Research Foundation of Korea
- Sherman Fairchild Foundation
- DE-SC0011632
- Department of Energy (DOE)
- Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- Created
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2017-01-06Created from EPrint's datestamp field
- Updated
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2021-11-11Created from EPrint's last_modified field