Horizon State, Hawking Radiation and Boundary Liouville Model

TL;DR

This paper shows that near-horizon physics, including Hawking radiation and reflection phenomena, can be fully described using boundary Liouville conformal field theory, offering a new theoretical perspective.

Contribution

It introduces the concept of horizon state within boundary Liouville theory to explain Hawking radiation as a transition process, unifying black hole near-horizon physics with conformal field theory.

Findings

Hawking radiation modeled as horizon state transition

Reflection off potential barrier explained via boundary CFT

Horizon physics described entirely within conformal field theory

Abstract

We demonstrate that the near-horizon physics, the Hawking radiation and the reflection off the radial potential barrier, can be understood entirely within a conformal field theory picture in terms of one- and two-point functions in the boundary Liouville theory. An important element in this demonstration is the notion of {\it horizon state}, the Hawking radiation being interpreted as a result of the transition of horizon state to the ordinary states propagating outside black hole horizon.