D1-D3 (or $\bar{\textrm{D}3}$) Systems with Fluxes

TL;DR

This paper investigates D1-D3 and D1-D3 bar brane systems with fluxes in type IIB string theory, analyzing supersymmetric configurations, open string spectra, and pair creation rates, revealing many near-massless states and flux-dependent phenomena.

Contribution

It provides a comprehensive classification of supersymmetric D1-D3 systems with fluxes, relates them via T-duality, and studies open string spectra and pair creation in various configurations.

Findings

Many near-massless states in NS sector for near-BPS configurations.

Supersymmetric configurations related to intersecting D1-D1 pairs.

Calculated open string pair creation rates in nonsupersymmetric setups.

Abstract

In this article we study D1-D3 (or $\bar{\textrm{D}3}$) brane systems with generic constant electric and magnetic fluxes in IIB string theory. We work out all possible supersymmetric configurations and find out via T-duality all of them and corresponding supersymmetry conditions could be related to the supersymmetric intersecting D1-D1 pairs. And we do D1-D3 (or $\bar{\textrm{D}3}$) open string quantization for a class of configurations. We find that there are many near massless states in NS sector for near-BPS configurations. Furthermore we calculate open string pair creation rate in generic nonsupersymmetric configurations.