Model-independent bubble wall velocities in local thermal equilibrium
Model-independent bubble wall velocities in local thermal equilibrium
复制标题
局部热平衡中与模型无关的气泡壁速度
DOI:
10.1088/1475-7516/2023/07/002
复制
发表时间:
2023
影响因子:
6.4
通讯作者:
Ai W
中科院分区:
文献类型:
--
作者:
Ai W
Accurately determining bubble wall velocities in first-order phase transitions is of great importance for the prediction of gravitational wave signals and the matter-antimatter asymmetry. However, it is a challenging task which typically depends on the underlying particle physics model. Recently, it has been shown that assuming local thermal equilibrium can provide a good approximation when calculating the bubble wall velocity. In this paper, we provide a model-independent determination of bubble wall velocities in local thermal equilibrium. Our results show that, under the reasonable assumption that the sound speeds in the plasma are approximately uniform, the hydrodynamics can be fully characterized by four quantities: the phase strength α n, the ratio of the enthalpies in the broken and symmetric phases, Ψ n, and the sound speeds in both phases, c s and c b. We provide a code snippet that allows for a determination of the wall velocity and energy fraction in local thermal equilibrium in any model. In addition, we present a fit function for the wall velocity in the case c s= c b= 1/√(3).
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影响因子:
5
作者:
Ai W
通讯作者:
Ai W
DOI:
--
发表时间:
1994
期刊:
Physical Review D, Particles and fields
影响因子:
--
作者:
A. Heckler
通讯作者:
A. Heckler
影响因子:
8.6
作者:
R. Janik;M. Järvinen;H. Soltanpanahi;J. Sonnenschein
通讯作者:
J. Sonnenschein
DOI:
10.1016/j.nuclphysb.2014.12.008
发表时间:
2014-10
期刊:
Nuclear Physics
影响因子:
--
作者:
L. Leitao;A. Mégevand
通讯作者:
L. Leitao;A. Mégevand
影响因子:
5
作者:
J. Cline;B. Laurent
通讯作者:
B. Laurent