Relation between electric–magnetic duality and worldsheet T-duality

Determine whether the electric–magnetic duality of the Galilean Kalb–Ramond theory matches the target-space realization of worldsheet T-duality in the tensionless-string regime.

Background

The contraction construction yields electric and magnetic Galilean limits related by an exchange of the two-form sectors, while the tensionless-string setting exhibits a target-space T-duality structure associated with $O(d,d)$. The paper explicitly poses the unresolved question of whether these two duality operations are the same or are connected by a precise correspondence.