Reheating-induced axion dark matter after low scale inflation
Abstract A kinetic mixing between the axion and the inflaton allows for a production of axion dark matter even if the inflationary Hubble scale is smaller than the zero-temperature axion mass. We analyze the axion dynamics in this recently discovered “inflaxion” frame- work, and present a new cosmol...
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doaj-64cac8df998a45b0b5f035778352a0682020-11-25T03:31:03ZengSpringerOpenJournal of High Energy Physics1029-84792020-09-012020912710.1007/JHEP09(2020)052Reheating-induced axion dark matter after low scale inflationTakeshi Kobayashi0Lorenzo Ubaldi1Kobayashi-Maskawa Institute for the Origin of Particles and the Universe, Nagoya UniversitySISSA and INFN Sezione di TriesteAbstract A kinetic mixing between the axion and the inflaton allows for a production of axion dark matter even if the inflationary Hubble scale is smaller than the zero-temperature axion mass. We analyze the axion dynamics in this recently discovered “inflaxion” frame- work, and present a new cosmological scenario where the axion drifts away from its vacuum during the reheating epoch, giving rise to the observed dark matter abundance. We discuss the implications for both the QCD axion and axion-like particles.http://link.springer.com/article/10.1007/JHEP09(2020)052Cosmology of Theories beyond the SMEffective Field Theories |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Takeshi Kobayashi Lorenzo Ubaldi |
spellingShingle |
Takeshi Kobayashi Lorenzo Ubaldi Reheating-induced axion dark matter after low scale inflation Journal of High Energy Physics Cosmology of Theories beyond the SM Effective Field Theories |
author_facet |
Takeshi Kobayashi Lorenzo Ubaldi |
author_sort |
Takeshi Kobayashi |
title |
Reheating-induced axion dark matter after low scale inflation |
title_short |
Reheating-induced axion dark matter after low scale inflation |
title_full |
Reheating-induced axion dark matter after low scale inflation |
title_fullStr |
Reheating-induced axion dark matter after low scale inflation |
title_full_unstemmed |
Reheating-induced axion dark matter after low scale inflation |
title_sort |
reheating-induced axion dark matter after low scale inflation |
publisher |
SpringerOpen |
series |
Journal of High Energy Physics |
issn |
1029-8479 |
publishDate |
2020-09-01 |
description |
Abstract A kinetic mixing between the axion and the inflaton allows for a production of axion dark matter even if the inflationary Hubble scale is smaller than the zero-temperature axion mass. We analyze the axion dynamics in this recently discovered “inflaxion” frame- work, and present a new cosmological scenario where the axion drifts away from its vacuum during the reheating epoch, giving rise to the observed dark matter abundance. We discuss the implications for both the QCD axion and axion-like particles. |
topic |
Cosmology of Theories beyond the SM Effective Field Theories |
url |
http://link.springer.com/article/10.1007/JHEP09(2020)052 |
work_keys_str_mv |
AT takeshikobayashi reheatinginducedaxiondarkmatterafterlowscaleinflation AT lorenzoubaldi reheatinginducedaxiondarkmatterafterlowscaleinflation |
_version_ |
1724573994924900352 |