Compactifications with S-Duality Twists

TL;DR

This paper explores generalized Scherk-Schwarz reductions involving electromagnetic duality twists, leading to lower-dimensional theories with massive, self-dual form fields, extending the understanding of duality symmetries in supergravity.

Contribution

It develops a method to perform reductions with duality twists on duality-invariant formulations, producing new massive self-dual theories in odd dimensions.

Findings

Constructed theories in D=3,5,7 with massive self-dual form fields.

Demonstrated reduction on duality-invariant formulations is feasible.

Extended the framework for duality-twisted supergravity reductions.

Abstract

We consider generalised Scherk Schwarz reductions of supergravity and superstring theories with twists by electromagnetic dualities that are symmetries of the equations of motion but not of the action, such as the S-duality of D=4, N=4 super-Yang-Mills coupled to supergravity. The reduction cannot be done on the action itself, but must be done either on the field equations or on a duality invariant form of the action, such as one in the doubled formalism in which potentials are introduced for both electric and magnetic fields. The resulting theory in odd-dimensions has massive form fields satisfying a self-duality condition $dA \sim m*A$. We construct such theories in D=3,5,7.