Hawking radiation of nonsingular black holes in two dimensions

Details Hawking radiation of nonsingular black holes in two dimensions Hawking radiation of nonsingular black holes in two dimensions

2002-10-02

arxiv.org/abs/hep-th/0210016v4

JHEP 0302 (2003) 037

Physics

High Energy Physics

High Energy Physics - Theory

8 pages, 4 figures; minor revisions; references added; version to appear in JHEP

Scientific paper

10.1088/1126-6708/2003/02/037

In this letter we study the process of Hawking radiation of a black hole assuming the existence of a limiting physical curvature scale. The particular model is constructed using the Limiting Curvature Hypothesis (LCH) and in the context of two-dimensional dilaton gravity. The black hole solution exhibits properties of the standard Schwarzschild solution at large values of the radial coordinate. However, near the center, the black hole is nonsingular and the metric becomes that of de Sitter spacetime. The Hawking temperature is calculated using the method of complex paths. We find that such black holes radiate eternally and never completely evaporate. The final state is an eternally radiating relic, near the fundamental scale, which should make a viable dark matter candidate. We briefly comment on the black hole information loss problem and the production of such black holes in collider experiments.

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