Large N=4 Holography

TL;DR

This paper extends the class of 2d minimal model CFTs with higher spin AdS3 duals to include theories with large N=4 superconformal symmetry, constructing a higher spin theory and proposing dual coset models.

Contribution

It introduces a higher spin theory based on the D(2,1|alpha) superalgebra and suggests a dual coset CFT, expanding the understanding of large N=4 holography.

Findings

Constructed a higher spin theory with D(2,1|alpha) superalgebra.

Proposed a large N coset CFT dual.

Indicated a potential non-abelian Vasiliev theory for string backgrounds.

Abstract

The class of 2d minimal model CFTs with higher spin AdS3 duals is extended to theories with large N=4 superconformal symmetry. We construct a higher spin theory based on the global D(2,1|alpha) superalgebra, and propose a large N family of cosets as a dual CFT description. We also indicate how a non-abelian version of this Vasiliev higher spin theory might give an alternative description of IIB string theory on an AdS3 x S3 x S3 x S1 background.