Speaker
Donald Marolf
(UC Santa Barbara)
Description
The Euclidean gravitational action is unbounded below. As a result, even at the effective field theory level, the gravitational path integral cannot be formulated as an integral over real Euclidean geometries. I therefore review recent efforts to formulate the path integral directly in Lorentz-signature in a manner that allows general topology-changing transitions. I will also describe how this formulation resolves certain puzzles associated with computing the density of states for nearly-extremal black holes.
(VIRTUAL TALK)
External references
- 25060013
- 6865cb40-aa82-4acb-88b8-8fb082bbead3
