Polarized cosmological gravitational waves from primordial helical turbulence

被引：58
作者：
Kahniashvili, T
Gogoberidze, G
Ratra, B
机构：
[1] Kansas State Univ, Dept Phys, Manhattan, KS 66506 USA
[2] Abastumani Astrophys Observ, Ctr Plasma Astrophys, GE-0160 Tbilisi, Georgia
来源：
PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 15期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1103/PhysRevLett.95.151301
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We show that helical turbulence produced during a first-order phase transition generates circularly polarized cosmological gravitational waves (GWs). The characteristic frequency of these GWs for an extreme case of the phase transition model is around 10(-3)-10(-2) Hz with an energy density parameter as high as 10(-12)-10(-11). The possibility of detection is briefly discussed.
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