Intersecting branes and adding flavors to the Maldacena-Nunez background

TL;DR

This paper explores how to incorporate fundamental flavors into the Maldacena-Nuñez background by adding intersecting branes, providing a new approach to include matter fields in the dual gauge theory via open string sectors.

Contribution

It introduces a method to add non-chiral fundamental flavors through spacetime filling branes and proposes a twist involving open string charge to couple flavors to the gauge theory.

Findings

Adding D9-branes and D5'-branes introduces fundamental flavors.

A new twisting method involving open string charge is proposed.

The approach models flavor coupling via open string sectors.

Abstract

We study adding flavors into the Maldacena-N\u{u}nez background. It is achieved by introducing spacetime filling D9-branes or intersecting D5$'$-branes into the background with a wrapping D5-brane. Both D9-branes and D5$'$-branes can be spacetime filling from the 5D bulk point of view. At the probe limit it corresponds to introducing non-chiral fundamental flavors into the dual N=1 SYM. We propose a method to twist the fundamental flavor which has to involve open string charge. It reflects the fact that coupling fundamental matter to SYM in the dual string theory corresponds to adding an open string sector