D-Branes in the Background of NS Fivebranes

TL;DR

This paper investigates the behavior of D-branes near NS fivebranes, providing a holographic dual description of their interactions, verifying previous properties, and exploring instabilities and vacua in Little String Theory.

Contribution

It offers a new holographic framework for D-branes in NS fivebrane backgrounds, confirming prior indirect results and analyzing non-supersymmetric instabilities.

Findings

Verified properties of D-branes using holography

Identified instabilities in non-supersymmetric configurations

Described vacua of Little String Theory in linear dilaton backgrounds

Abstract

We study the dynamics of $D$-branes in the near-horizon geometry of $NS$ fivebranes. This leads to a holographically dual description of the physics of $D$-branes ending on and/or intersecting $NS5$-branes. We use it to verify some properties of such $D$-branes which were deduced indirectly in the past, and discuss some instabilities of non-supersymmetric brane configurations. Our construction also describes vacua of Little String Theory which are dual to open plus closed string theory in asymptotically linear dilaton spacetimes.