A New Holographic Model of Chiral Symmetry Breaking

TL;DR

This paper introduces a novel holographic model for chiral symmetry breaking using D7-branes in a conifold background, analyzing its spectra, Goldstone bosons, and dual gauge theory, including a case without symmetry breaking.

Contribution

It presents a new family of gravity models for chiral symmetry breaking with detailed spectra and dual gauge theory analysis, expanding holographic approaches.

Findings

Identified Goldstone bosons associated with symmetry breaking

Computed spectra of scalar and vector mesons

Analyzed models with and without chiral symmetry breaking

Abstract

A new family of models of flavour chiral symmetry breaking is proposed. The models are based on the embedding of a stack of D7-branes and a stack of anti D7-branes in the conifold background. This family of gravity models is dual to a field theory with spontaneous breaking of conformal invariance and chiral flavour symmetry. We identify the corresponding Goldstone bosons and compute the spectra of massive scalar and vector mesons. The dual quiver gauge theory is also discussed. We further analyse a model where chiral symmetry is not broken.