QCD axion window and false vacuum Higgs inflation

Autor:	Hiroki Matsui, Fuminobu Takahashi, Wen Yin
Jazyk:	angličtina
Rok vydání:	2020
Předmět:	Beyond Standard Model Cosmology of Theories beyond the SM Higgs Physics Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
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
Externí odkaz:	https://doaj.org/article/142f7bd12296422c8712194f079e5877 Zobrazit plný text záznamu Full text from SpringerLink View record in DOAJ