Heidelberg 2007 – scientific programme

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GR: Fachverband Gravitation und Relativitätstheorie

GR 404: Schwarze Löcher

GR 404.1: Talk

Thursday, March 8, 2007, 15:15–15:30, KIP Kl. HS

Hawking radiation from quasi-normal modes — •Claus Kiefer — Institut für Theoretische Physik, Universität zu Köln, Zülpicher Str. 77, 50937 Köln

A perturbed black hole has characteristic frequencies (quasi-normal modes). Here I apply a quantum measurement analysis of the quasi-normal mode frequency in the limit of high damping. It turns out that a measurement of this mode necessarily adds noise to it. For a Schwarzschild black hole, this corresponds exactly to the Hawking temperature. The situation for other black holes is briefly discussed.

Ref.: C. Kiefer, Class. Quantum Grav. 21 (2004) L123.