Energy budget of cosmological first-order phase transition in FLRW background

被引：0
|
作者：
Rong-Gen Cai [1 ,2 ]
Shao-Jiang Wang [1 ,3 ,2 ]
机构：
[1] Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences
[2] School of Physical Sciences, University of Chinese Academy of Sciences
[3] Department of Physics, Helsinki Institute of Physics, University of Helsinki
来源：
Science China(Physics,Mechanics & Astronomy) | 2018年 / 61卷 / 08期
基金：
中国国家自然科学基金;
关键词：
cosmological first-order phase transition; bubble expansion; hydrodynamics;
D O I：
暂无
中图分类号：
P159 [宇宙学];
学科分类号：
070401 ;
摘要：
We study the hydrodynamics of bubble expansion in cosmological first-order phase transition in the Friedmann-Lema??treRobertson-Walker(FLRW) background with probe limit. Different from previous studies for fast first-order phase transition in flat background, we find that, for slow first-order phase transition in FLRW background with a given peculiar velocity of the bubble wall, the efficiency factor of energy transfer into bulk motion of thermal fluid is significantly reduced, thus decreasing the previously-thought dominated contribution from sound wave to the stochastic gravitational-wave background.
引用
收藏
页码：37 / 57
页数：21
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