THERMAL-EQUILIBRIUM DURING THE ELECTROWEAK PHASE-TRANSITION

被引:25
作者
TETRADIS, N
机构
[1] Deutsches Elektronen-Synchrotron DESY, Hamburg 52
来源
ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS | 1993年 / 57卷 / 02期
关键词
D O I
10.1007/BF01565066
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
The perturbative effective potential for the Standard Model develops a barrier, at temperatures around the electroweak scale, which separates the minimum at zero field and a deeper non-zero minimum. This could create out of equilibrium conditions by inducing the localization of the Higgs field in a metastable state around zero. In this picture vacuum decay would occur through bubble nucleation. I show that there is an upper bound on the Higgs mass for the above scenario to be realized. The barrier must be high enough to prevent thermal fluctuations of the Higgs expectation value from establishing thermal equilibrium between the two minima. The upper bound is estimated to be lower than the experimental lower limit. This also imposes constraints on extensions of the Standard Model constructed in order to generate a strongly first order phase transition.
引用
收藏
页码:331 / 337
页数:7
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