Energy budget of cosmological first-order phase transition in FLRWbackground

被引：12
|
作者：
Cai, Rong-Gen [1 ,3 ]
Wang, Shao-Jiang [1 ,2 ,3 ]
机构：
[1] Chinese Acad Sci, Inst Theoret Phys, Key Lab Theoret Phys, Beijing 100190, Peoples R China
[2] Univ Helsinki, Helsinki Inst Phys, Dept Phys, FI-00014 Helsinki, Finland
[3] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
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; FALSE VACUUM; GRAVITATIONAL-RADIATION; MAGNETIC-FIELDS; BUBBLE-GROWTH; WAVES; FATE; BARYOGENESIS;
D O I：
10.1007/s11433-018-9216-7
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study the hydrodynamics of bubble expansion in cosmological first-order phase transition in the Friedmann-LemaE dagger A +/- tre- Robertson-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
页数：21
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