Workshop on Spacetime and Quantum Information

We identify the microstates of the non–supersymmetric, asymptotically flat 2d black hole in the dual c = 1 matrix quantum mechanics (MQM). We calculate the partition function of the theory using Hamiltonian methods and reproduce one of two...

According to the AdS/CFT correspondence, the geometries of certain spacetimes are fully determined by quantum states that live on their boundaries -- indeed, by the von Neumann entropies of portions of those boundary states. This work investigates...

Bulk reconstruction is an important step in establishing the dictionary between boundary and bulk quantities in holographic theories. If the starting point is a quantum theory which serves as the putative boundary model, in what cases can one...

Quantum pseudorandom states are efficiently preparable states that are indistinguishable from truly Haar random states to an efficient observer. First defined by Ji, Liu and Song, such states have found a wide variety of applications in areas such...

Finding a gravitational description of black hole microstates is an important problem in quantum gravity. In this talk we describe how to reproduce the integer number of black hole microstates using the Gibbons-Hawking gravitational path integral...

I will describe work in progress proposing and analyzing the bulk path integral of double scaled SYK in various bases.

In double-scaled SYK, the chord diagrams of Berkooz et al. give rise to a bulk algebra and geometry. The algebra is a "quantum deformation" of the JT gravitational algebra that includes a deformation of SL(2,R). The growth of operator size (in...

Spacetime wormholes can lead to surprises in black hole physics. We show that a very old black hole can tunnel to a white hole/firewall by emitting a large baby universe. We study the process for a perturbed thermofield double black hole in Jackiw...

One puzzling aspect of holography is that it conjectures a duality between a physical theory with a single rigid causal structure (the non-gravitational "boundary theory") and one whose causal structure is state-dependent (the gravitational "bulk...