Hawking radiation from decoherence

Abstract

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.

6 pages, to appear in Class. Quantum Grav

References in corpus (2)

• Hawking Radiation as Tunneling
• Entropy of gravitons produced in the early Universe

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