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

TL;DR

This paper develops a superspace framework with manifest T-duality incorporating Ramond-Ramond fields, simplifying supergravity multiplet descriptions and providing a Green-Schwarz superstring action with separated equations of motion.

Contribution

It introduces a novel superspace formalism with central extension for Ramond-Ramond fields and a bilinear Wess-Zumino term in the superstring action.

Findings

Superspace with manifest T-duality including Ramond-Ramond fields is constructed.

All supergravity multiplets are represented as a vielbein superfield with trivial torsions.

A Green-Schwarz superstring action with separated equations of motion is formulated.

Abstract

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. Equations of motion are separated into left and right modes in a suitable gauge.