NANOGrav results and dark first order phase transitions

被引：49

作者：

Addazi, Andrea ^{[1
,2
]}

Cai, Yi-Fu ^{[3
,4
,5
]}

Gan, Qingyu ^{[1
]}

Marciano, Antonino ^{[6
,7
,8
]}

Zeng, Kaiqiang ^{[1
]}

机构：

[1] Sichuan Univ, Coll Phys, Ctr Theoret Phys, Chengdu 610065, Peoples R China

[2] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, I-100133 Rome, Italy

[3] Univ Sci & Technol China, Sch Phys Sci, Dept Astron, Hefei 230026, Peoples R China

[4] Chinese Acad Sci, Univ Sci & Technol China, Key Lab Res Galaxies & Cosmol, Hefei 230026, Peoples R China

[5] Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Peoples R China

[6] Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China

[7] Fudan Univ, Ctr Field Theory & Particle Phys, Shanghai 200433, Peoples R China

[8] Ist Nazl Fis Nucl, Lab Nazl Frascati, Via Enrico Fermi 54, I-00044 Rome, Italy

来源：

SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY | 2021年 / 64卷 / 09期

基金：

中国国家自然科学基金;

关键词：

gravitational waves; first order phase transitions; warm dark matter; effective field theory; GRAVITATIONAL-WAVES; NEUTRINOS; MODELS; SCALE; LIGHT;

D O I：

10.1007/s11433-021-1724-6

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The recent NANOGrav evidence of a common-source stochastic background provides a hint to gravitational waves (GW) radiation from the Early Universe. We show that this result can be interpreted as a GW spectrum produced from first order phase transitions (FOPTs) around a temperature in the keV-MeV window. Such a class of FOPTs at temperatures much below the electroweak scale can be naturally envisaged in several warm dark matter models such as Majoron dark matter.

引用

页数：6

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