A unique gravitational wave signal from phase transition during inflation*

被引：12

作者：

An, Haipeng ^{[1
,2
]}

Lyu, Kun-Feng ^{[3
,4
]}

Wang, Lian-Tao ^{[5
,6
,7
]}

Zhou, Siyi ^{[8
,9
]}

机构：

[1] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China

[2] Tsinghua Univ, Ctr High Energy Phys, Beijing 100084, Peoples R China

[3] Hong Kong Univ Sci & Technol, Dept Phys, Kowloon, Clear Water Bay, Hong Kong, Peoples R China

[4] Univ Calif Santa Barbara, Kavli Inst Theoret Phys, Santa Barbara, CA 93106 USA

[5] Univ Chicago, Dept Phys, Chicago, IL 60637 USA

[6] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[7] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA

[8] Stockholm Univ, Oskar Klein Ctr Cosmoparticle Phys, S-10691 Stockholm, Sweden

[9] Stockholm Univ, Dept Phys, S-10691 Stockholm, Sweden

来源：

CHINESE PHYSICS C | 2022年 / 46卷 / 10期

基金：

瑞典研究理事会; 美国国家科学基金会;

关键词：

gravitational waves; inflation; phase transition; RADIATION; UNIVERSE;

D O I：

10.1088/1674-1137/ac76a7

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We study the properties of gravitational wave (GW) signals produced by first-order phase transitions during the inflation era. We show that the power spectrum of a GW oscillates with its wave number. This signal can be observed directly by future terrestrial and spatial GW detectors and through the B-mode spectrum in the CMB. This oscillatory feature of the GW is generic for any approximately instantaneous sources occurring during inflation and is distinct from the GW from phase transitions after inflation. The details of the GW spectrum contain information about the scale of the phase transition and the later evolution of the universe.

引用

页数：10

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