8:30am Ying Zhao, "Collisions between localized shocks"

9:30am Luca Iliesiu, "Gravity factorized - Alpha-states, null-states and the quantum mechanical dual of canonical JT gravity"

Abstract: We find models of two-dimensional gravity that resolve the factorization puzzle and have a discrete spectrum, whilst retaining a semiclassical description. A novelty of these models is that they contain non-trivially correlated spacetime branes or, equivalently, nonlocal interactions in their action. Such nonlocal correlations are motivated in the low-energy gravity theory by integrating out UV degrees of freedom. Demanding factorization fixes all non-local interactions, and the exact geometric expansion of the partition function collapses to only two terms: the black hole saddle and a subleading ``half-wormhole'' geometry, whose sum yields the desired discrete spectrum. I will explain how each such model of dilaton-gravity determines an \alpha-state in the baby universe Hilbert space of JT gravity. Equivalences between different dilaton theories, in turn, determine all the null states in this Hilbert space. Finally, time permitting, I will describe a new quantum mechanical dual of the two-dimensional black hole solution found in JT gravity with a conventional discrete spectrum.

Work from with Jorrit Kruthoff and Andreas Blommaert from https://arxiv.org/pdf/2111.07863.pdf as well as work in progress.

For a different perspective on our work, feel free to watch https://www.youtube.com/watch?v=ZvYHgSqwGek

BREAK

4:30pm Cynthia Keeler, "Hidden Conformal Symmetries from Killing Towers"

5:30pm Ahmed Almheiri, "On the interior of an energy eigenstate black hole"

8:30am Geoff Penington, "Quantum Minimal Surfaces from Quantum Error Correction"

9:30am Chris Akers, "Quantum Minimal Surfaces from Quantum Error Correction"