Backreacting Flavors in the Klebanov-Strassler Background

TL;DR

This paper constructs new analytic supergravity solutions with added flavors in the Klebanov-Strassler background, elucidating their dual field theories, RG flows, and duality properties.

Contribution

It provides the first analytic solutions for flavored Klebanov-Strassler backgrounds and clarifies their dual gauge theories and duality transformations.

Findings

Analytic solutions for flavored backgrounds are derived.

Matching of beta functions and anomalies confirms duality correspondence.

UV behavior suggests the presence of a duality wall in the field theory.

Abstract

In this paper we present new analytic solutions of pure Type IIB supergravity plus D7-branes describing the addition of an arbitrary number of flavors to the Klebanov-Tseytlin and Klebanov-Strassler backgrounds. We provide a precise field theory dual and a detailed analysis of the duality cascade which describes its RG flow. Matchings of beta functions and anomalies between the field theory and the string setup are presented. We give an understanding of Seiberg duality as a large gauge transformation on the RR and NSNS potentials. We also analyze the UV behavior of the field theory, that as suggested by the string background can be associated with a duality wall.