The energy budget of cosmological first-order phase transitions beyond the bag equation of state

doi:10.1088/1475-7516/2022/10/047

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	Wang, Shao-Jiang ; Yuwen, Zi-Yan
	The energy budget of cosmological first-order phase transitions beyond the bag equation of state
发表期刊	JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (IF:5.126[JCR-2017],4.45[5-Year])
语种	英语
关键词	GRAVITATIONAL-RADIATION MAGNETIC-FIELDS
摘要	The stochastic gravitational-wave backgrounds (SGWBs) from the cosmological first-order phase transitions (FOPTs) serve as a promising probe for the new physics beyond the standard model of particle physics. When most of the bubble walls collide with each other long after they had reached the terminal wall velocity, the dominated contribution to the SGWBs comes from the sound waves characterized by the efficiency factor of inserting the released vacuum energy into the bulk fluid motions. However, the previous works of estimating this efficiency factor have only considered the simplified case of the constant sound velocities in both symmetric and broken phases, either for the bag model with equal sound velocities or v-model with different sound velocities in the symmetric and broken phases, which is unrealistic from a viewpoint of particle physics. In this paper, we propose to solve the fluid EoM with an iteration method when taking into account the sound-velocity variation across the bubble wall for a general and realistic equation of state (EoS) beyond the simple bag model and v-model. We have found a suppression effect for the efficiency factor of bulk fluid motions, though such a suppression effect could be negligible for the strong FOPT, in which case the previous estimation from a bag EoS on the efficiency factor of bulk fluid motions still works as a good approximation.
	2022
ISSN	1475-7516
期号	10 页码:47
合作性质	国内
学科领域	Astronomy & Astrophysics ; Physics
学科门类	Astronomy & Astrophysics ; Physics, Particles & Fields
DOI	10.1088/1475-7516/2022/10/047
收录类别	SCIE
引用统计	正在获取...
文献类型	期刊论文
条目标识符	http://ir.itp.ac.cn/handle/311006/27879
专题	SCI期刊论文
作者单位	1.[Wang, Shao-Jiang 2.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Zhongguancun East Rd 55, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci UCAS, Sch Phys Sci, Yuquan Rd 19A, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang, Shao-Jiang,Yuwen, Zi-Yan. The energy budget of cosmological first-order phase transitions beyond the bag equation of state[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2022(10):47.
APA	Wang, Shao-Jiang,&Yuwen, Zi-Yan.(2022).The energy budget of cosmological first-order phase transitions beyond the bag equation of state.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(10),47.
MLA	Wang, Shao-Jiang,et al."The energy budget of cosmological first-order phase transitions beyond the bag equation of state".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .10(2022):47.

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