Hawking radiation from decoherence

Details Hawking radiation from decoherence Hawking radiation from decoherence

2001-10-15

arxiv.org/abs/gr-qc/0110070v1

Class.Quant.Grav.18:L151-,2001

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

6 pages, to appear in Class. Quantum Grav

Scientific paper

10.1088/0264-9381/18/22/101

It is argued that the thermal nature of Hawking radiation arises solely due to decoherence. Thereby any information-loss paradox is avoided because for closed systems pure states remain pure. The discussion is performed for a massless scalar field in the background of a Schwarzschild black hole, but the arguments should hold in general. The result is also compared to and contrasted with the situation in inflationary cosmology.

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