Non-supersymmetric D1/D5, F/NS5 and closed string tachyon condensation

TL;DR

This paper constructs non-supersymmetric intersecting D-brane solutions in type IIB string theory, demonstrating their interpolation between black solutions and bubbles of nothing, interpreted as closed string tachyon condensation.

Contribution

It introduces new non-susy D1/D5 and F/NS5 solutions and shows their continuous interpolation with black and bubble solutions, linking to tachyon condensation phenomena.

Findings

Solutions interpolate between black holes and bubbles of nothing.

Final bubbles are static and stable.

Transitions include black F-string to bubble of nothing and AdS black hole to global AdS.

Abstract

We construct the intersecting non-supersymmetric (non-susy) D1/D5 solution of type IIB string theory. While, as usual, the solution is charged under an electric two-form and an electric six-form gauge field, it also contains a non-susy chargeless (non-BPS) D0-brane. The S-dual of this solution is the non-susy F/NS5 solution. We show how these solutions nicely interpolate between the corresponding black (or non-extremal) solutions and the Kaluza-Klein (KK) "bubble of nothing" (BON) by continuously changing some parameters characterizing the solutions from one set of values to another. We show, by a time symmetric general bubble initial data analysis, that the final bubbles in these cases are static and stable and the interpolations can be physically interpreted as closed string tachyon condensation. As special cases, we recover the transition of two charge black F-string to BON, considered by Horowitz, and also the transition from AdS$_3$ black hole to global AdS$_3$.