A new AdS_4/CFT_3 Dual with Extended SUSY and a Spectral Flow

TL;DR

This paper constructs a new AdS_4/CFT_3 dual background in Type IIB supergravity via non-Abelian T-duality, revealing a spectral flow in the dual gauge theory akin to Seiberg duality, and suggesting a modified ABJM-like CFT with reduced supersymmetry.

Contribution

It introduces a novel AdS_4 background obtained through non-Abelian T-duality and analyzes its dual CFT, uncovering a spectral flow phenomenon similar to Seiberg duality.

Findings

Discovery of a new AdS_4 background in Type IIB supergravity.

Identification of a spectral flow in the dual CFT resembling Seiberg duality.

Proposal of a modified ABJM-like CFT with reduced supersymmetry.

Abstract

We construct a new AdS_4 background in Type IIB supergravity by means of a non-Abelian T-duality transformation on the Type IIA dual of ABJM. The analysis of probe and particle-like branes suggests a dual CFT in which each of the gauge groups is doubled. A common feature of non-Abelian T-duality is that in the absence of any global information coming from String Theory it gives rise to non-compact dual backgrounds, with coordinates living in the Lie algebra of the Lie group involved in the dualization. In backgrounds with CFT duals this poses obvious problems to the CFTs. In this paper we show that for the new AdS_4 background the gauge groups of the associated dual CFT undergo a spectral flow as the non-compact internal direction runs from 0 to infinity, which resembles Seiberg duality in N=1. This phenomenon, very reminiscent of the cascade, provides an interpretation in the CFT for the running of the non-compact coordinate, and suggests that at the end of the flow the extra charges disappear and the dual CFT is described by a 2-node quiver very similar to ABJM, albeit with reduced supersymmetry.