The Conformal Limit of the 0A Matrix Model and String Theory on AdS(2)

TL;DR

This paper investigates the conformal limit of the 0A matrix model, revealing its duality to an AdS(2) background and showing the spectrum matches a free fermion, indicating no closed string excitations.

Contribution

It demonstrates the spectrum equivalence between the conformal limit of the 0A matrix model and a free fermion on AdS(2), clarifying the nature of excitations in this background.

Findings

Spectrum matches that of a free fermion on AdS(2)

No closed string excitations are present in this background

Supports duality between matrix model limit and AdS(2) string theory

Abstract

We analyze the conformal limit of the matrix model describing flux backgrounds of two dimensional type 0A string theory. This limit is believed to be dual to an AdS(2) background of type 0A string theory. We show that the spectrum of this limit is identical to that of a free fermion on AdS(2), suggesting that there are no closed string excitations in this background.