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GR: Fachverband Gravitation und Relativitätstheorie

GR 7: Schwarze Löcher – Lösungen II

GR 7.1: Vortrag

Dienstag, 28. Februar 2012, 15:30–15:50, ZHG 002

Critical regions in Lovelock space-times — •Keno Eilers, Burkhard Kleihaus, and Jutta Kunz — Institut für Physik, Carl-von-Ossietzky-Universität Oldenburg

Black Strings in Gauss-Bonnet theory are known to exhibit critical solutions, which limit their domain of existence. For positive Gauss-Bonnet coupling constant α, the critical solution is reached for a minimal radius of the string, at a finite mass, temperature, and curvature. For negative α, on the other hand, a critical solution with a curvature singularity is encountered. Black Holes in “maximal” Lovelock gravity theories exhibit analogous critical solutions.

Here we show that this behavior is typical for Gauss-Bonnet and Lovelock theories, by studying the phase diagrams of black objects for a rather big variety of such theories.