BUBBLE WALL VELOCITY IN A FIRST-ORDER ELECTROWEAK PHASE-TRANSITION

被引：149

作者：

MOORE, G ^{[1
]}

PROKOPEC, T ^{[1
]}

机构：

[1] UNIV LANCASTER,SCH PHYS & CHEM,LANCASTER LA1 4YB,ENGLAND

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.75.777

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We calculate the velocity and thickness of a bubble wall at the electroweak phase transition in the minimal standard model. We model the wall with semiclassical equations of motion and show that friction arises from the deviation of massive particle populations from thermal equilibrium. We treat these with Boltzmann equations in a fluid approximation. Our technique allows us to account for particle transport, and to determine the wall thickness dynamically. We find that the wall is significantly thicker than at phase equilibrium, and that the velocity is fairly high, upsilon(W) similar or equal to 0.6c for m(H) = 50 GeV.

引用

页码：777 / 780

页数：4

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