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

作     者：Rong-Gen Cai Shao-Jiang Wang 

作者机构：Key Laboratory of Theoretical PhysicsInstitute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China Department of PhysicsHelsinki Institute of PhysicsUniversity of HelsinkiHelsinki F1-00014Finland School of Physical SciencesUniversity of Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学：物理学、力学、天文学（英文版）)

年 卷 期：2018年第61卷第8期

页      面：33-53页

核心收录：

学科分类：07[理学] 09[农学] 070401[理学-天体物理] 0704[理学-天文学] 0902[农学-园艺学] 090201[农学-果树学] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11690022,11435006,11447601,and 11647601) the Strategic Priority Research Program of China Academy Sciences(Grant No.XDB23030100) the Peng Huanwu Innovation Research Center for Theoretical Physics(Grant No.11747601) the Key Research Program of Frontier Sciences of China Academy Sciences 

主　　题：cosmological first-order phase transition bubble expansion hydrodynamics 

摘      要：We study the hydrodynamics of bubble expansion in cosmological first-order phase transition in the Fdedmann-LemMtre- 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.