Date & Time: Thu 12 Jan 2023 at 11.30am:
Venue: Lecture Hall 803
Explorations of Gravitational Entropy
One of the most striking facts about gravity is that it tells us that black holes have a large entropy that scales inversely with the Newton's constant. Even more striking is that the theory of gravity does not contain the microstates that this entropy counts. In this talk, I want to describe some ways in which the quantum gravity community has explored this entropy, like the fact that this gravitational entropy seamlessly interconverts with quantum mechanical entanglement entropy. I will also outline some exact and approximate ways of thinking about this entropy and mention some open questions entailed by these.