Two-dimensional black holes as open strings: A new realization of the ADS/CFT correspondence

TL;DR

This paper demonstrates that two-dimensional black holes in AdS space can be modeled by open strings, providing new insights into the AdS/CFT correspondence and accurately reproducing black hole entropy through string state counting.

Contribution

It introduces a novel realization of the AdS/CFT correspondence using open string dynamics in two-dimensional dilaton gravity.

Findings

Black hole entropy matches string state counting in the Dirichlet case.

Two different boundary conditions lead to distinct AdS/CFT realizations.

The approach offers a new perspective on holography in lower dimensions.

Abstract

We show that weak-coupled two-dimensional dilaton gravity on Anti-de Sitter space can be described by the dynamics of an open string. Neumann and Dirichlet boundary conditions for the string lead to two different realizations of the Anti-de Sitter/Conformal Field Theory correspondence. In particular, in the Dirichlet case the thermodynamical entropy of two-dimensional black holes can be exactly reproduced by counting the string states.