1112.1638 (Bartlomiej Czech)
Bartlomiej Czech
I show that cosmological bubble walls in the thin wall approximation are
unstable to the creation of "barnacles" -- loci of different wall tension
adjacent to regions filled with a third vacuum. Barnacle formation leads to the
same observational consequences as the extensively studied bubble collision
scenario, but occurs exponentially more often. The process is described by a
saddle point of the thin wall action with two negative modes.
View original:
http://arxiv.org/abs/1112.1638
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