D-branes in curved spacetime: Nappi-Witten background

TL;DR

This paper identifies exact D-brane configurations in the Nappi-Witten curved spacetime background, explores their T-duality relations, and connects boundary state and sigma model descriptions to understand their properties.

Contribution

It introduces explicit D-brane solutions in a curved background and clarifies their relation through T-duality and boundary conditions, advancing understanding of D-branes in non-trivial geometries.

Findings

Exact D-brane configurations in Nappi-Witten background

Relations between D-branes via T-duality transformations

Correspondence between boundary state and sigma model boundary conditions

Abstract

We find exact D-brane configurations in the Nappi-Witten background using the boundary state approach and describe how they are related by T-duality transformations. We also show that the classical boundary conditions of the associated sigma model correspond to a field dependent automorphism relating the chiral currents and discuss the correspondence between the boundary state approach and the sigma model approach.