Adding open string modes to the gauge/gravity correspondence

TL;DR

This paper reviews how adding D-branes as probes to supergravity backgrounds extends the gauge/gravity correspondence to include fundamental matter, enabling meson spectrum calculations in supersymmetric gauge theories.

Contribution

It introduces a method to incorporate fundamental matter into gauge/gravity duality using probe D-branes, expanding the correspondence's applicability.

Findings

Meson spectra can be computed for various brane intersections.

The approach applies to supersymmetric gauge theories with matter in multiple dimensions.

Probe approximation simplifies the analysis of fundamental matter inclusion.

Abstract

We review some recent results on the extension of the gauge/gravity correspondence to include matter in the fundamental representation by adding D-branes to the supergravity backgrounds. Working in the quenched approximation, in which the D-branes are considered as probes, we show how to compute the meson spectrum for a general case of brane intersections which are dual to supersymmetric gauge theories with matter supermultiplets in several dimensions.