Non-supersymmetric microstates of the D1-D5-KK system

Understand

We construct a discrete family of smooth non-supersymmetric three charge geometries carrying D1 brane, D5 brane and Kaluza-Klein monopole charges in Type IIB supergravity compactified on a six-torus, which can be interpreted as the geometric description of some special states of the brane system.

• These solutions are asymptotically flat in four dimensions, and generalise previous supersymmetric solutions.
• The solutions have a qualitatively similar structure to previous non-supersymmetric smooth solutions carrying D1 and D5 brane charges in five dimensions, and indeed can be viewed as the five-dimensional system placed at the core of a Kaluza-Klein monopole.
• The geometries are smooth, free of horizons and do not have closed timelike curves.