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A toy model for decoherence in the black hole information problem · Around

2019

A toy model for decoherence in the black hole information problem

Agarwal, Kartiek, Bao, Ning

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We investigate a plausible route to resolving the black hole information paradox by examining the effects of decoherence on Hawking radiation.

In particular, we show that a finite but non-zero rate of decoherence can lead to efficient extraction of information from the evaporating black hole.
This effectively pushes the paradox from becoming manifest at the Page time when the black hole has evaporated to half its size, to a timescale solely determined by the rate of decoherence.
If this rate is due to a putative interaction with gravitons, the black hole at this timescale can be expected to be Planck-sized, but notably without an extensive amount of information packed inside.

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