Dualising the Baryonic Branch: Dynamic SU(2) and confining backgrounds in IIA

TL;DR

This work constructs new supersymmetric solutions in massive IIA by applying non-Abelian T-duality to the Baryonic Branch of the Klebanov-Strassler background. The resulting geometries exhibit a dynamical $SU(2)$-structure, with a static ultraviolet regime and a dynamical infrared regime, providing a geometric handle on confinement and symmetry breaking. The authors map these geometric features to non-conformal field theories closely related to Sicilian theories and linear quivers, highlighting domain walls, a $U(1)_R$ anomaly, and a baryon condensate as key non-perturbative phenomena. Overall, the paper broadens the holographic toolbox for studying non-conformal, ${ m N}=1$ dynamics and points to rich IR physics in new IIA backgrounds.

Abstract

In this paper we construct and examine new supersymmetric solutions of massive IIA supergravity that are obtained using non-Abelian T-duality applied to the Baryonic Branch of the Klebanov-Strassler background. The geometries display SU(2) structure which we show flows from static in the UV to dynamical in the IR. Confinement and symmetry breaking are given a geometrical interpretation by this change of structure. Various field theory observables are studied, suggesting possible ways to break conformality and flow in $N=1$ $T_N$ and related field theories.