Speaker
Wen-Yuan Ai
(King's College London)
Description
It is commonly expected that a friction force on the bubble wall can only arise from out-of-equilibrium effects. In this talk, I will discuss the bubble wall motion in local thermal equilibrium. We show that there is a nonvanishing effective friction on the wall in local thermal equilibrium provided that the plasma temperature distribution is inhomogeneous across the wall. Further, we propose a new matching condition from local entropy conservation. With this, we are able to determine bubble wall velocities in local thermal equilibrium in a model-independent way.
Primary author
Wen-Yuan Ai
(King's College London)
