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GR: Fachverband Gravitation und Relativitätstheorie

GR 5: Schwarze Löcher – Lösungen I

GR 5.1: Vortrag

Dienstag, 28. Februar 2012, 08:30–08:50, ZHG 002

Gravitational objects in the presence of a minimal length — Piero Nicolini¹, •Alessio Orlandi², and Euro Spallucci³ — ¹Frankfurt Institute for Advanced Studies (FIAS) and Institut fur Theoretische Physik, u Johann Wolfgang Goethe-Universitaet, Frankfurt am Main, Germany — ²Dipartimento di Fisica, Universita' di Bologna and INFN, Sezione di Bologna, Italy — ³Dipartimento di Fisica, Universita' di Trieste and INFN, Sezione di Trieste, Italy

In this contribution I will present a new family of gravitational objects representing gravitational matter shells. The key feature of these geometries is the presence of a minimal length. The latter can be implemented by considering an effective stress tensor, whose time-time component is governed by higher momentum of the Gaussian distribution. By solving Einstein equations, one finds that the resulting geometries describe singularity-free black holes with no, one or two horizons. By studying the Hawking temperature, I will show how the inclusion of the minimal length improves usual problems of terminal phase of the evaporation. Finally I will mention further developments in the direction of brane world black holes.