Supersymmetric Brane-Antibrane Configurations

TL;DR

This paper constructs and analyzes flat supersymmetric brane-antibrane configurations with dissolved fundamental strings, clarifying their charge structure, supergravity solutions, and gauge theory descriptions, and demonstrating their stability without tachyons.

Contribution

It introduces a new class of supersymmetric brane-antibrane configurations derived from background electric fields, with detailed charge, supergravity, and gauge theory analyses.

Findings

Identified supersymmetric brane-antibrane states with dissolved strings.

Constructed corresponding supergravity solutions.

Proved absence of tachyonic instabilities in worldvolume theories.

Abstract

We find a class of flat supersymmetric brane-antibrane configurations. They follow from ordinary brane-antibrane systems by turning on a specific worldvolume background electric field, which corresponds to dissolved fundamental strings. We have clarified in detail how they arise and identified their constituent charges as well as the corresponding supergravity solutions. Adopting the matrix theory description, we construct the worldvolume gauge theories and prove the absence of any tachyonic degrees. We also study supersymmetric solitons of the worldvolume theories.