Barnacles -- A Novel Channel for Vacuum Decay

Details Barnacles -- A Novel Channel for Vacuum Decay Barnacles -- A Novel Channel for Vacuum Decay

2011-12-07

arxiv.org/abs/1112.1638v1

Physics

High Energy Physics

High Energy Physics - Theory

6 pp. plus references

Scientific paper

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.

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