Barnacles -- A Novel Channel for Vacuum Decay
arXiv:1112.1638 · doi:10.1016/j.physletb.2012.06.018
Abstract
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.
6 pp. plus references
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Cited by in corpus (9)
- Black holes and the multiverse
- Inflation after False Vacuum Decay: Observational Prospects after Planck
- Analyzing Cosmic Bubble Collisions
- Negative modes of Coleman-De Luccia bounces
- Analyzing Multi-Field Tunneling With Exact Bounce Solutions
- Lower Bound for the Multi-Field Bounce Action
- Semiclassical Approach to Heterogeneous Vacuum Decay
- Forecasting constraints from the cosmic microwave background on eternal inflation
- Barnacles and Gravity