Reheating of the Universe as holographic thermalization
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...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2016-08-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269316302726 |
| _version_ | 1818318558252236800 |
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| author | Shinsuke Kawai Yu Nakayama |
| author_facet | Shinsuke Kawai Yu Nakayama |
| author_sort | Shinsuke Kawai |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-13T09:55:08Z |
| format | Article |
| id | doaj.art-394a272686484266a9a9975682cab036 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 1873-2445 |
| language | English |
| last_indexed | 2024-12-13T09:55:08Z |
| publishDate | 2016-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-394a272686484266a9a9975682cab0362022-12-21T23:51:48ZengElsevierPhysics Letters B0370-26931873-24452016-08-01759C54654910.1016/j.physletb.2016.06.019Reheating of the Universe as holographic thermalizationShinsuke Kawai0Yu Nakayama1Department of Physics, Sungkyunkwan University, Suwon 16419, Republic of KoreaCalifornia Institute of Technology, 452-48, Pasadena, CA 91125, USAAssuming 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.http://www.sciencedirect.com/science/article/pii/S0370269316302726 |
| spellingShingle | Shinsuke Kawai Yu Nakayama Reheating of the Universe as holographic thermalization Physics Letters B |
| title | Reheating of the Universe as holographic thermalization |
| title_full | Reheating of the Universe as holographic thermalization |
| title_fullStr | Reheating of the Universe as holographic thermalization |
| title_full_unstemmed | Reheating of the Universe as holographic thermalization |
| title_short | Reheating of the Universe as holographic thermalization |
| title_sort | reheating of the universe as holographic thermalization |
| url | http://www.sciencedirect.com/science/article/pii/S0370269316302726 |
| work_keys_str_mv | AT shinsukekawai reheatingoftheuniverseasholographicthermalization AT yunakayama reheatingoftheuniverseasholographicthermalization |