Description
Gaberdiel and Gopakumar recently proposed that the tensionless limit of string theory on $AdS_3 \times S^3 \times T^4$ takes the form of a higher spin theory with a gauge algebra that is called the `higher spin square'. Here we will couple a bulk matter field to the higher spin square gauge theory and show that its particle spectrum accounts for the entire untwisted sector of the dual symmetric orbifold CFT.