Online conference on Zoom.

The experience of an observer interacting with a black hole or in de Sitter space can be described by a Type II von Neumann algebra.

This gives a slightly abstract explanation of why entropy is better defined in gravity than in ordinary quantum field theory. Based on arXiv:2112.12828 and work to appear with V. Chandrasekharan and G. Penington.

Algebras and Entropies

Speaker(s)

Edward Witten

Events

The asymptotic structure of space-time (1)

General 2D Dilaton Gravity

The asymptotic structure of space-time (2)

The asymptotic structure of space-time (3)

The asymptotic structure of space-time (4)

On Non-Local CFTs and Holography

The asymptotic structure of space-time (5)

Non-Conformal Symmetries and Near-Extremal Black Holes

The asymptotic structure of space-time (6)

Berry Phases, Wormholes and Factorization in AdS/CFT

Stringy ER=EPR

Three-Dimensional Gravity on Spaces with Multiple Boundaries

Algebras and Entropies

See also