QCD axion window and low-scale inflation | |
Yin, W; Guth, AH; Takahashi, F; Yin W(殷文) | |
刊名 | PHYSICAL REVIEW D
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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. |
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