Title: The holographic entropy arrangement Abstract: Understanding the structure of multipartite correlations in holography, and more generally in QFT, is a hard open problem. I will present a new framework that allows, using holography, to identify a natural class of entropic information quantities which characterize multipartite correlations in holography, and possibly more generally in QFT. I will review the derivation … Read More
The modern S-matrix program offers a mechanical approach to bootstrapping quantum field theories without the aid of an action. After reviewing progress in gravity and gauge theory, I show how EFTs are similarly constructible by carving out a theory space of consistent EFTs from first principles. I then describe how gravity serves as the “mother of all theories” whose amplitudes … Read More
Abstract: I will discuss some bulk implications of causality via subregion/subregion duality in AdS/CFT. To do so, I will introduce a new approach to geometric problems about extremal surfaces via properties of simple algebraic operators. As an illustrative application of the power of this formalism, I will give a proof of an averaged version of the quantum focusing conjecture for … Read More
Abstract : A new class of solvable irrelevant deformations of 2d QFTs have been uncovered recently. In this talk, I shall discuss modular properties of the deformed theories. This deformation turns out to be unique once we impose modular invariance and a one-to-one map between the spectra of the deformed and undeformed theories. The deformed CFTs (also in higher dimensions) … Read More
Abstract: Quantum error correction has helped understand various aspects of holography such as bulk reconstruction and the Ryu Takayanagi formula for entanglement entropy. I will discuss how the cosmic brane prescription for computing Renyi entropy in AdS/CFT can also be understood as a feature of operator algebra quantum error correction. This has implications for understanding tensor networks and the holographic … Read More
Abstract: Gravity in a finite region, with Dirichlet boundary conditions at the walls, can be studied in AdS/CFT as a deformation of the CFT by an irrelevant operator. The deformed theory is a peculiar QFT, but it may be useful as a building block for holography in more general spacetimes. I will review the status of this “T-Tbar” duality in … Read More
Abstract: Recently we pointed out that the black hole interior operators can be reconstructed by using the Hayden-Preskill recovery protocols. Building on this observation, we propose a resolution of the firewall problem by presenting a state-independent reconstruction of interior operators. Our construction avoids the non-local signalling problem which plagued the “ER=EPR” proposal.
Abstract: I will discuss energy-energy correlators in conformal field theories and a new type of OPE describing their expansion in the small-angle limit.