Supersymmetric gauge theories on squashed five-spheres and their gravity duals

TL;DR

This paper constructs gravity duals for large N supersymmetric gauge theories on squashed five-spheres, computes their partition functions and Wilson loops, and finds exact agreement with matrix model results, revealing a universal formula depending on a Killing vector.

Contribution

It introduces new gravity dual solutions for squashed five-sphere gauge theories and provides exact holographic computations matching field theory results.

Findings

Exact match between supergravity and matrix model partition functions.

Construction of BPS deformations of squashed five-spheres.

Proposal of a universal formula for partition functions on five-spheres.

Abstract

We construct the gravity duals of large N supersymmetric gauge theories defined on squashed five-spheres with SU(3) x U(1) symmetry. These five-sphere backgrounds are continuously connected to the round sphere, and we find a one-parameter family of 3/4 BPS deformations and a two-parameter family of (generically) 1/4 BPS deformations. The gravity duals are constructed in Euclidean Romans F(4) gauged supergravity in six dimensions, and uplift to massive type IIA supergravity. We holographically renormalize the Romans theory, and use our general result to compute the renormalized on-shell actions for the solutions. The results agree perfectly with the large N limit of the dual gauge theory partition function, which we compute using large N matrix model techniques. In addition we compute BPS Wilson loops in these backgrounds, both in supergravity and in the large N matrix model, again finding precise agreement. Finally, we conjecture a general formula for the partition function on any five-sphere background, which for fixed gauge theory depends only on a certain supersymmetric Killing vector.