Bubble-nucleation rates for cosmological phase transitions

Details Bubble-nucleation rates for cosmological phase transitions Bubble-nucleation rates for cosmological phase transitions

1999-04-16

arxiv.org/abs/hep-ph/9904357v2

JHEP 9911:023,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 2 fig.s. Final version

Scientific paper

10.1088/1126-6708/1999/11/023

We estimate bubble-nucleation rates for cosmological phase transitions. We concentrate on the evaluation of the pre-exponential factor, for which we give approximate analytical expressions. Our approach relies on the use of a real coarse-grained potential. We show how the coarse-graining scale can be determined in the studies of high-temperature phase transitions. We discuss the metastability bound on the Higgs-boson mass and the electroweak phase transition. We find that the saddle-point approximation is reliable in the first case and breaks down in the second case.

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