On unquenched N=2 holographic flavor

TL;DR

This paper explores the holographic dual of N=2 supersymmetric Yang-Mills theory with unquenched fundamental flavors, deriving equations that include backreaction effects and analyzing mesonic excitations.

Contribution

It introduces a system of first order equations accounting for backreaction of flavor branes in N=2 holographic models, extending previous quenched approximations.

Findings

Derived explicit modifications of the holomorphic coupling.

Formulated equations including backreaction of flavor branes.

Discussed properties of mesonic excitations.

Abstract

The addition of fundamental degrees of freedom to a theory which is dual (at low energies) to N=2 SYM in 1+3 dimensions is studied. The gauge theory lives on a stack of Nc D5 branes wrapping an S^2 with the appropriate twist, while the fundamental hypermultiplets are introduced by adding a different set of Nf D5-branes. In a simple case, a system of first order equations taking into account the backreaction of the flavor branes is derived (Nf/Nc is kept of order 1). From it, the modification of the holomorphic coupling is computed explicitly. Mesonic excitations are also discussed.