String Field Theory from IIB Matrix Model

TL;DR

This paper derives string field theory from the IIB matrix model by connecting loop equations to superstring theory, demonstrating the continuum limit reproduces type IIB superstring in the large-N limit.

Contribution

It introduces a novel derivation of superstring field theory from the IIB matrix model using loop equations and continuum limits.

Findings

Reproduces light-cone superstring field theory from matrix model

Shows continuum limit yields superstring in large-N limit

Interacting string theory emerges in double scaling limit

Abstract

We derive Schwinger-Dyson equations for the Wilson loops of a type IIB matrix model. Superstring coordinates are introduced through the construction of the loop space. We show that the continuum limit of the loop equation reproduces the light-cone superstring field theory of type IIB superstring in the large-N limit. We find that the interacting string theory can be obtained in the double scaling limit as it is expected.