Uniqueness Theorem for Stationary Axisymmetric Black Holes in Einstein-Maxwell-axion-dilaton Gravity

TL;DR

This paper proves a uniqueness theorem for stationary axisymmetric black holes within Einstein-Maxwell-axion-dilaton gravity, a low-energy limit of heterotic string theory, including both non-degenerate and extremal Kerr-Sen solutions.

Contribution

It establishes the first rigorous uniqueness theorem for black holes in this specific string-inspired gravity theory.

Findings

Uniqueness of stationary axisymmetric black holes proven.

Includes both non-degenerate and extremal Kerr-Sen solutions.

Extends classical black hole uniqueness results to string theory contexts.

Abstract

We prove the uniqueness theorem for stationary axisymmetric black hole solution in Einstein-Maxwell-axion-dilaton gravity being the low-energy limit of the heterotic string theory. We consider both non-degenerate and extremal Kerr-Sen black hole solutions.