New Confinement Phases from Singular SCFT

TL;DR

This paper explores new confinement phases in N=2 supersymmetric QCD by deforming singular SCFTs with an N=1 mass term, confirming the GST description's validity through symmetry and vacuum analysis.

Contribution

It demonstrates the correctness of the Gaiotto-Seiberg-Tachikawa (GST) description for these confinement phases in various gauge theories with flavors.

Findings

GST variables accurately describe the confinement vacua

Confirmation of symmetry and vacuum counting matches theoretical predictions

Examples include USp(2N), SU(N), and SO(N) theories with flavors

Abstract

New types of confining phase emerge when some singular SCFT's appearing as infrared fixed points of N=2 supersymmetric QCD (SQCD) are deformed by an N=1 adjoint mass term. We make further checks on the Gaiotto-Seiberg-Tachikawa (GST) description of these vacua against the symmetry and vacuum counting argument, and show that the GST variables correctly describe these systems, brought into confinement phase by the N=1 perturbation. Several examples of such vacua, USp(2N) and SU(N) theories with four flavors and SO(N) theories with one or two flavors, are discussed.