Bound-states of D-branes in L-R asymmetric superstring vacua

TL;DR

This paper explores the stability and properties of D-brane bound-states in non-geometric, left-right asymmetric Type II string vacua with extended supersymmetry, highlighting their residual supersymmetry and R-R coupling.

Contribution

It introduces the concept of stable D-brane bound-states in L-R asymmetric vacua and identifies their open string excitations, extending understanding of non-geometric string backgrounds.

Findings

D-brane bound-states are stable due to residual supersymmetry.

Open string excitations of these D-branes are characterized.

Residual R-R potentials support the stability of these configurations.

Abstract

We discuss bound-states of D-branes in truly L-R asymmetric and thus non-geometric Type II vacuum configurations with extended supersymmetry. We argue for their stability as a result of residual supersymmetry and coupling to R-R potentials surviving in the massless spectrum. We then identify the open string excitations of these L-R asymmetric BPS D-branes. Finally, we briefly comment on possible applications and extensions.