Stationary bubbles and their tunneling channels toward trivial geometry

Understand

In the path integral approach, one has to sum over all histories that start from the same initial condition in order to obtain the final condition as a superposition of histories.

• Applying this into black hole dynamics, we consider stable and unstable stationary bubbles as a reasonable and regular initial condition.
• We find examples where the bubble can either form a black hole or tunnel toward a trivial geometry, i.e., with no singularity nor event horizon.
• We investigate the dynamics and tunneling channels of true vacuum bubbles for various tensions.