New Semiclassical Picture of Vacuum Decay

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Abstract

We introduce a new picture of vacuum decay which, in contrast to existing semiclassical techniques, provides a real-time description and does not rely on classically forbidden tunneling paths. Using lattice simulations, we observe vacuum decay via bubble formation by generating realizations of vacuum fluctuations and evolving with the classical equations of motion. The decay rate obtained from an ensemble of simulations is in excellent agreement with existing techniques. Future applications include bubble correlation functions, fast decay rates, and decay of nonvacuum states.

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Braden, J., Johnson, M. C., Peiris, H. V., Pontzen, A., & Weinfurtner, S. (2019). New Semiclassical Picture of Vacuum Decay. Physical Review Letters, 123(3). https://doi.org/10.1103/PhysRevLett.123.031601

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