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Article Dans Une Revue Physical Review D Année : 2015

Black hole fireworks: quantum-gravity effects outside the horizon spark black to white hole tunneling

Résumé

We show that there is a classical metric satisfying the Einstein equations outside a finite spacetime region where matter collapses into a black hole and then emerges from a white hole. We compute this metric explicitly. We show how quantum theory determines the (long) time for the process to happen. A black hole can thus quantum-tunnel into a white hole. For this to happen, quantum gravity should affect the metric also in a small region outside the horizon: we show that contrary to what is commonly assumed, this is not forbidden by causality or by the semiclassical approximation, because quantum effects can pile up over a long time. This scenario alters radically the discussion on the black hole information puzzle.

Dates et versions

hal-01255344 , version 1 (13-01-2016)

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Hal M. Haggard, Carlo Rovelli. Black hole fireworks: quantum-gravity effects outside the horizon spark black to white hole tunneling. Physical Review D, 2015, 92 (10), pp.104020. ⟨10.1103/PhysRevD.92.104020⟩. ⟨hal-01255344⟩
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