A 4d non-BPS NS-NS microstate

Abstract

Abstract We construct a two-parameter four-dimensional non-BPS NS-NS smooth microstate solution that asymptotes to flat spacetime with a linear dilaton in type II superstring theory. From the microscopic point of view, the background is made out of a certain number of decoupled (i.e. g s → 0) NS5 branes wrapping T 3 × S 1 × S 1 with fundamental strings wrapping non-contractable cycles of S 1 × S 1 with integer momentum modes along them. We show that perturbative worldsheet theory in this background is given by a null-gauged WZW model. We also show that the consistency of the worldsheet theory imposes non-trivial constraints on the supergravity background.

Keywords

• AdS-CFT Correspondence
• Black Holes in String Theory
• Gauge-Gravity Correspondence
• Long Strings