Strings on AdS3 × S3 × S3 × S1

Abstract

Abstract String theory on AdS3 × S3 × S3 × S1 with pure NS-NS flux and minimal flux through one of the two S3’s is studied from a world-sheet perspective. It is shown that the spacetime spectrum, as well as the algebra of spectrum generating operators, matches precisely that of the symmetric orbifold of S3 × S1 in the large N limit. This gives strong support for the proposal that these two descriptions are exactly dual to one another.