T-duality, quotients and generalized Kahler geometry

Understand

In this paper we reopen the discussion of gauging the two-dimensional off-shell (2,2) supersymmetric sigma models written in terms of semichiral superfields.

• The associated target space geometry of this particular sigma model is generalized Kahler (or bi-hermitean with two non-commuting complex structures).
• The gauging of the isometries of the sigma model is now done by coupling the semichiral superfields to the new (2,2) semichiral vector multiplet.
• We show that the two moment maps together with a third function form the complete set of three Killing potentials which are associated with this gauging.