Classical Solutions in Two-Dimensional String Theory and Gravitational Collapse

TL;DR

This paper presents exact classical solutions for two-dimensional string theory, including gravitational collapse of tachyons, and discusses their relation to matrix-model approaches, advancing understanding of black hole formation in simplified models.

Contribution

It provides explicit dynamical black hole solutions with tachyon back reaction in 2D string theory, connecting them to matrix-model descriptions.

Findings

Explicit 2D black hole solutions with tachyon back reaction.

Demonstration of gravitational collapse in 2D string theory.

Discussion of correspondence with matrix-model approach.

Abstract

A general solution to the $D=2$ 1-loop beta functions equations including tachyonic back reaction on the metric is presented. Dynamical black hole (classical) solutions representing gravitational collapse of tachyons are constructed. A discussion on the correspondence with the matrix-model approach is given.