DLCQ-M(atrix) Description of String Theory, and Supergravity

TL;DR

This paper explores the relationship between Matrix string theory and the DLCQ approach to string theory, demonstrating how perturbative amplitudes are reproduced and proposing methods to incorporate non-flat backgrounds.

Contribution

It provides a detailed description of how Matrix string theory corresponds to DLCQ string theory and suggests new ways to include non-flat backgrounds using SYM and supergravity insights.

Findings

Perturbative string amplitudes are reproduced in Matrix string theory.

Connection established between SYM and supergravity for non-flat backgrounds.

Framework proposed for describing Matrix theory in curved spacetimes.

Abstract

We discuss the connection between Matrix string theory and the DLCQ of string theory. Using this connection we describe the sense in which perturbative string amplitudes are reproduced in the Matrix string theory. Using recent realization of the connection between SYM and Supergravity, we suggest how to describe Matrix theory with non-flat backgrounds.