QCD axion window and low-scale inflation

doi:10.1103/PhysRevD.98.015042

	QCD axion window and low-scale inflation
	Yin, W; Guth, AH; Takahashi, F; Yin W(殷文)
刊名	PHYSICAL REVIEW D
	2018
卷号	98 期号:1 页码:15042
ISSN号	2470-0010
DOI	10.1103/PhysRevD.98.015042
文献子类	Article
英文摘要	We show that the upper bound of the classical QCD axion window can be significantly relaxed for low-scale inflation. If the Gibbons-Hawking temperature during inflation is lower than the QCD scale, the initial QCD axion misalignment angle follows the Bunch-Davies distribution. The distribution is peaked at the strong CP conserving minimum if there is no other light degree of freedom contributing to the strong CP phase. As a result, the axion overproduction problem is significantly relaxed even for an axion decay constant larger than 1012 GeV. We also provide concrete hilltop inflation models where the Hubble parameter during inflation is comparable to or much smaller than the QCD scale, with successful reheating taking place via perturbative decays or dissipation processes.
电子版国际标准刊号	2470-0029
WOS关键词	INVISIBLE AXION ; RESONANT LEPTOGENESIS ; ENTROPY PRODUCTION ; CP CONSERVATION ; CONSTRAINTS ; COSMOLOGY ; PLANCK ; PSEUDOPARTICLES ; ASYMMETRY ; ABUNDANCE
WOS研究方向	Astronomy & Astrophysics ; Physics
语种	英语
WOS记录号	WOS:000440384800012
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/286178]
专题	高能物理研究所_理论物理室
通讯作者	Yin W(殷文)
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Yin, W,Guth, AH,Takahashi, F,et al. QCD axion window and low-scale inflation[J]. PHYSICAL REVIEW D,2018,98(1):15042.
APA	Yin, W,Guth, AH,Takahashi, F,&殷文.(2018).QCD axion window and low-scale inflation.PHYSICAL REVIEW D,98(1),15042.
MLA	Yin, W,et al."QCD axion window and low-scale inflation".PHYSICAL REVIEW D 98.1(2018):15042.