Effects of the cosmological expansion on the bubble nucleation rate for relativistic first-order phase transitions

Details Effects of the cosmological expansion on the bubble nucleation rate for relativistic first-order phase transitions Effects of the cosmological expansion on the bubble nucleation rate for relativistic first-order phase transitions

2008-04-07

arxiv.org/abs/0804.1045v3

Phys.Rev.D78:063533,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, LaTeX, no figures, final version to appear in PRD

Scientific paper

10.1103/PhysRevD.78.063533

I calculate the first corrections to the dynamical pre-exponential factor of the bubble nucleation rate for a relativistic first-order phase transition in an expanding cosmological background by estimating the effects of the Hubble expansion rate on the critical bubbles of Langer's statistical theory of metastability. I also comment on possible applications and problems that arise when one considers the field theoretical extensions of these results (the Coleman-De Luccia and Hawking-Moss instantons and decay rates).

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