Scalar fluctuations produce a nonvanishing entropy discontinuity across an electroweak bubble wall even in the zero-friction limit, showing LTE-based wall velocity upper bounds cannot be saturated.
Damping Rate and Lyapunov Exponent of a Higgs Field at High Temperature
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The damping rate of a Higgs field at zero momentum is calculated using the Braaten-Pisarski method and compared to the Lyapunov exponent of the classical SU(2) Yang-Mills Higgs system.
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Entropy production at electroweak bubble walls from scalar field fluctuations
Scalar fluctuations produce a nonvanishing entropy discontinuity across an electroweak bubble wall even in the zero-friction limit, showing LTE-based wall velocity upper bounds cannot be saturated.