Rotating Black Holes in a Goedel Universe

TL;DR

This paper constructs a five-dimensional rotating black hole in a Goedel universe using string theory techniques, explores its properties, and discusses implications for causality and holography.

Contribution

It introduces a new five-dimensional black hole solution in a Goedel universe derived from string theory, highlighting its microscopic brane description and physical properties.

Findings

Existence of a bound on black hole rotation

Presence of closed timelike curves

Potential holographic chronology protection

Abstract

We construct a five--dimensional, asymptotically Goedel, three--charge black hole via dimensional reduction of an asymptotically plane wave, rotating D1-D5-brane solution of type IIB supergravity. This latter is itself constructed via the solution generating procedure of Garfinkle and Vachaspati, applied to the standard rotating D1-D5-brane solution. Taking all charges to be equal gives a "BMPV Goedel black hole", which is closely related to that recently found by Herdeiro. We emphasise, however, the importance of our ten--dimensional microscopic description in terms of branes. We discuss various properties of the asymptotically Goedel black hole, including the physical bound on the rotation of the hole, the existence of closed timelike curves, and possible holographic protection of chronology.