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Bubble wall velocity beyond leading-log approximation in electroweak phase transition

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arxiv 2011.12903 v1 pith:VYOZSEEP submitted 2020-11-25 hep-ph

classification hep-ph
keywords wallbubblevelocityphasetransitionapproximationbeyondcollision
verification ladder T0 review T1 audit T2 compute T3 formal
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The bubble wall velocity is essential for the phase transition dynamics in the early universe and its cosmological implications, such as the energy budget of phase transition gravitational wave and electroweak baryogenesis. One key factor to determine the wall velocity is the collision term that quantifies the interactions between the massive particles in the plasma and the bubble wall. We improve the calculations of the collision term beyond the leading-log approximation, and further obtain more precise bubble wall velocity for a representative effective model.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Entropy production at electroweak bubble walls from scalar field fluctuations

    hep-ph 2025-07 conditional novelty 7.0 of 10

    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.

  2. Thermal Masses and Bubble-Wall Friction in Cosmological Phase Transitions

    hep-ph 2026-07 conditional novelty 6.0 of 10

    Including thermal masses in both the Boltzmann source and collision terms removes the infrared gauge-boson enhancement, making W-boson friction subleading in the singlet-extended Standard Model.

  3. The Bubble Wall Velocity in Local Thermal Equilibrium and Energy Budget with Full Effective Potential

    hep-ph 2025-05 conditional novelty 5.0 of 10

    Using the full one-loop effective potential with the LTE approximation, the authors find that for xSM deflagration, bag-model gravitational wave peak predictions can differ by up to 48% in frequency and 90% in amplitu...

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