Supersymmetric AdS_6 via T-duality

TL;DR

The paper constructs a new supersymmetric AdS_6 solution in type IIB by applying SU(2) non-Abelian T-duality to the known massive IIA AdS_6 background from D4-D8 branes, preserving the SU(2) R-symmetry and yielding 16 supercharges. It analyzes the resulting NS-NS and RR fields, the associated Killing spinor projection, and the resulting geometry, including singularities and an emergent modulus from the dual internal space. The work highlights the novel possibility of supersymmetry-preserving non-Abelian T-duality in AdS_6, discusses potential implications for the dual 5d fixed-point theories, and outlines directions for classifying SUSY AdS_6 solutions in IIB and understanding holographic duals. Overall, it opens a new route to explore 5d CFTs via non-Abelian dualities and their gravitational descriptions.

Abstract

We present a new supersymmetric AdS_6 solution of type IIB supergravity with SU(2) isometry. Through the AdS/CFT correspondence, this has potentially very interesting implications for 5d fixed point theories. This solution is the result of a non-Abelian T-duality on the known supersymmetric AdS_6 solution of massive IIA. The SU(2) R-symmetry is untouched, leading to sixteen supercharges and preserved supersymmetry.