Abstract
Abstract
We study the dynamics of a cosmological bubble wall beyond the approximation of an infinitely thin wall.
In a previous paper, we discussed the range of validity of this approximation
and estimated the first-order corrections due to the finite width.
Here, we introduce a systematic method to obtain the wall equation of motion and its profile at each order in the wall width.
We discuss in detail the next-to-next-to-leading-order terms.
We use the results to treat the growth of spherical bubbles and the evolution of small deformations of planar walls.