On string theory on (deformed)

We revisit the fermionic string theory on with k = 1, and its single-trace deformation, with a focus on the (2, 2) superstring on (deformed). In a certain limit, it is dual to the symmetric product of the (-deformed) SCFT₂ on. We present the winding-one delta-function normalizable worldsheet operators which, in the k = 1 decoupling limit, correspond to those of in spacetime. We then demonstrate how their properties in string theory reproduce those of, or more generally, of a (-deformed) seed of the boundary theory.