Bubble-wall speed with loop corrections

Abstract

In this paper, we investigate the dynamics of the nucleating scalar field during the first-order phase transitions by incorporating one-loop corrections of classical fluctuations. We assume that a high-temperature expansion is valid\te where the mass of the scalar field is significantly smaller than the temperature\te so that we can treat the bubble-wall dynamics in a regime where quantum fluctuations can be integrated out. We present a systematic framework for calculating classical loop corrections to the wall speed; contrast our results with traditional methods based on the derivative expansion; show that the latent heat can differ from the effective-potential result; and discuss general hydrodynamic corrections. Finally, we show an application of the presented framework for a simple scalar field model, finding that the one-loop improvement decreases the wall speed and that an effective-potential approximation underestimates full one-loop corrections by about a factor of two.

19 pages, 4 figures

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Cited by in corpus (4)

• Finite-temperature bubble nucleation with shifting scale hierarchies
• Bubble wall dynamics from nonequilibrium quantum field theory
• Entropy production at electroweak bubble walls from scalar field fluctuations
• Running Couplings in High-Temperature Effective Field Theory