First-Order Phase Transitions in an Early-Universe Environment

Details First-Order Phase Transitions in an Early-Universe Environment First-Order Phase Transitions in an Early-Universe Environment

2000-01-24

arxiv.org/abs/hep-ph/0001241v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 figures, to appear in Proceedings of the International Workshop on Particle Physics and the Early Universe (COSMO 9

Scientific paper

In first-order phase transitions in the early universe, the bubble wall is expected to be significantly slowed-down by its interaction with the surrounding plasma. We examine the behaviour of the phase of the Higgs field after two-bubble collisions, and find that phase differences equilibrate much more quickly in slow-moving bubbles than in those which expand at the speed of light. This could lead to a significant reduction in the initial density of topological defects formed at a first-order phase transition.

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