Bubble wall velocities in the standard model and beyond
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Universidade Federal de Minas Gerais
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We present results for the bubble wall velocity and bubble wall thickness during
a cosmological first-order phase transition in a condensed form. Our results are for minimal
extensions of the Standard Model but in principle are applicable to a much broader class of
settings. Our first assumption about the model is that only the electroweak Higgs is obtaining
a vacuum expectation value during the phase transition. The second is that most of the
friction is produced by electroweak gauge bosons and top quarks. Under these assumptions
the bubble wall velocity and thickness can be deduced as a function of two equilibrium
properties of the plasma: the strength of the phase transition and the pressure difference
along the bubble wall.
Abstract
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Ondas gravitacionais, Cosmologia
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Cosmological phase transitions, Cosmology, Gravitational waves
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https://iopscience.iop.org/article/10.1088/1475-7516/2018/12/034