The Exact Geometry of a Kerr-Taub-NUT Solution of String Theory

Abstract

In this paper we study a solution of heterotic string theory corresponding to a rotating Kerr-Taub-NUT spacetime. It has an exact CFT description as a heterotic coset model, and a Lagrangian formulation as a gauged WZNW model. It is a generalisation of a recently discussed stringy Taub-NUT solution, and is interesting as another laboratory for studying the fate of closed timelike curves and cosmological singularities in string theory. We extend the computation of the exact metric and dilaton to this rotating case, and then discuss some properties of the metric, with particular emphasis on the curvature singularities.

arXiv comment14 pages, 3 figures

References in corpus (12)

• Conformally Exact Metric and Dilaton in String Theory on Curved Spacetime
• Ehlers--Harrison--Type Transformations in Dilaton--Axion Gravity
• Effective action of gauged WZW model and exact string solutions
• Supersymmetry and Stationary Solutions in Dilaton-Axion Gravity
• Exact Models of Extremal Dyonic 4D Black Hole Solutions of Heterotic String Theory
• Taub--NUT Dyons in Heterotic String Theory
• Exact Effective Action and Spacetime Geometry in Gauged WZW Models
• An Exact String Theory Model of Closed Time-Like Curves and Cosmological Singularities
• Exact Bosonic and Supersymmetric String Black Hole Solutions
• Heterotic Coset Models
• $SL(2,R)xSU(2)/R^2$ string model in curved spacetime and exact conformal results
• A Conformal Field Theory of a Rotating Dyon

Cited by in corpus (2)

• The Disjointed Thermodynamics of Rotating Black Holes With a NUT Twist
• Global properties of an exact string theory solution in two and four dimensions