Comments on Supersymmetry Algebra and Contact Term in Matrix String Theory

TL;DR

This paper explicitly constructs supercharges in matrix string theory, verifies the supersymmetry algebra at leading order, and discusses higher-order contact terms to deepen understanding of the theory's structure.

Contribution

It provides explicit expressions for supercharges in matrix string theory and analyzes supersymmetry algebra and contact terms beyond leading order.

Findings

Supercharges explicitly written in matrix string theory

Supersymmetry algebra verified at leading order

Discussion of higher-order contact terms

Abstract

Following hep-th/0309238 relating the matrix string theory to the light-cone superstring field theory, we write down two supercharges in the matrix string theory explicitly. After checking the supersymmetry algebra at the leading order, we proceed to discuss higher-order contact terms.