D3-D5 theories with unquenched flavors

TL;DR

This paper constructs supergravity duals for defect theories with unquenched flavors, revealing anisotropic Lifshitz-like scale invariance in massless flavor cases and analyzing massive quark effects.

Contribution

It develops supergravity solutions for D3-D5 brane intersections with unquenched flavors, incorporating backreaction and preserving supersymmetry in the Veneziano limit.

Findings

Supergravity solutions with backreacted D5-branes are obtained.

Massless flavors lead to anisotropic Lifshitz-like scale invariance.

Massive quarks modify the geometry and symmetry properties.

Abstract

We construct the string duals of the defect theories generated when N_f flavor D5-branes intersect N_c color D3-branes along a 2+1 dimensional subspace. We work in the Veneziano limit in which N_c and N_f are large and N_f/N_c is fixed. By smearing the D5-branes, we find supergravity solutions that take into account the backreaction of the flavor branes and preserve two supercharges. When the flavors are massless the resulting metric displays an anisotropic Lifshitz-like scale invariance. The case of massive quarks is also considered.