Speaker
Description
In the study of the equilibrium properties of high-temperature phase
transitions, effective field theories have been extremely fruitful. On
the one hand, they make possible nonperturbative lattice simulations,
which yield unambiguously reliable results up to small statistical
uncertainties. On the other hand, by knitting together chains of
effective field theories, perturbative predictions for first-order phase
transitions can be made to converge towards lattice results to high
accuracy. For the bubble wall speed, the same hierarchies of scales are
present, plus more, each with their own effective description. In this
talk, I will give an overview of where and how these different scales
arise in computations of the bubble wall speed, and what we can learn
from recent progress in the context of equilibrium physics.
