From D-Dbar Pairs to Branes in Motion

TL;DR

This paper explores novel supersymmetric brane configurations involving moving intersections, including those with intersection points traveling at light speed, expanding understanding of time-dependent string backgrounds.

Contribution

It introduces new supersymmetric brane configurations not obtainable by simple boosts, revealing dynamic intersections with potential applications in string theory backgrounds.

Findings

Discovered supersymmetric configurations with light-speed intersection points.

Identified dual descriptions involving moving branes.

Extended the class of known supersymmetric brane setups.

Abstract

We investigate various supersymmetric brane intersections. Motivated by the recent results on supertubes, we investigate general constraints in which parallel brane-antibrane configurations are supersymmetric. Dual descriptions of these configurations involve systems of branes in relative motion. In particular, we find new supersymmetric configurations which are not related to a static brane intersection by a boost. In these new configurations, the intersection point moves at the speed of light. These systems provide interesting time dependent backgrounds for open strings.