A Stable Non-BPS Configuration From Intersecting Branes and Antibranes

TL;DR

This paper presents a stable, tachyon-free non-BPS brane configuration in type IIA string theory involving intersecting branes, which exhibits a phase transition as the compactification radius varies.

Contribution

It introduces a novel elliptic brane setup that remains stable without tachyons and demonstrates a phase transition related to brane separation.

Findings

Stable non-BPS brane configuration without tachyons

Phase transition at a critical compactification radius

Potential develops a minimum indicating finite brane separation

Abstract

We describe a tachyon-free stable non-BPS brane configuration in type IIA string theory. The configuration is an elliptic model involving rotated NS5 branes, D4 branes and anti-D4 branes, and is dual to a fractional brane-antibrane pair placed at a conifold singularity. This configuration exhibits an interesting behaviour as we vary the radius of the compact direction. Below a critical radius the D4 and anti-D4 branes are aligned, but as the radius increases above the critical value the potential between them develops a minimum away from zero. This signals a phase transition to a configuration with finitely separated branes.