Ramond-Ramond gauge fields in superspace with manifest T-duality

Understand

A superspace with manifest T-duality including Ramond-Ramond gauge fields is presented.

• The superspace is defined by the double nondegenerate super-Poincare algebras where Ramond-Ramond charges are introduced by central extension.
• This formalism allows a simple treatment that all the supergravity multiplets are in a vielbein superfield and all torsions with dimension 1 and less are trivial.
• A Green-Schwarz superstring action is also presented where the Wess-Zumino term is given in a bilinear form of local currents.