QCD axion window and false vacuum Higgs inflation
Autor: | Hiroki Matsui, Fuminobu Takahashi, Wen Yin |
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Jazyk: | angličtina |
Rok vydání: | 2020 |
Předmět: | |
Zdroj: | Journal of High Energy Physics, Vol 2020, Iss 5, Pp 1-29 (2020) |
Druh dokumentu: | article |
ISSN: | 1029-8479 12296422 |
DOI: | 10.1007/JHEP05(2020)154 |
Popis: | Abstract The abundance of the QCD axion is known to be suppressed if the Hubble parameter during inflation, H inf , is lower than the QCD scale, and if the inflation lasts sufficiently long. We show that the tight upper bound on the inflation scale can be significantly relaxed if the eternal old inflation is driven by the standard-model Higgs field trapped in a false vacuum at large field values. Specifically, H inf can be larger than 100 GeV if the false vacuum is located above the intermediate scale. We also discuss the slow-roll inflation after the tunneling from the false vacuum to the electroweak vacuum. |
Databáze: | Directory of Open Access Journals |
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