Fluctuations and Bubble Dynamics in First-Order Phase Transitions

Details Fluctuations and Bubble Dynamics in First-Order Phase Transitions Fluctuations and Bubble Dynamics in First-Order Phase Transitions

1996-06-28

arxiv.org/abs/hep-ph/9606476v2

Phys.Rev. D55 (1997) 582-594

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex, 30 pages, 11 ps figures, short discussion added in conclusions and minor clarifications, accepted to Phys Rev D

Scientific paper

10.1103/PhysRevD.55.582

We numerically examine the effect of thermal fluctuations on a first-order phase transition in 2+1 dimensions. By focusing on the expansion of a single bubble we are able to calculate changes in the bubble wall's velocity as well as changes in its structure relative to the standard case where the bubble expands into a homogeneous background. Not only does the wall move faster, but the transition from the symmetric to the asymmetric phase is no longer smooth, even for a fairly strong transition. We discuss how these results affect the standard picture of electroweak baryogenesis.

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