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Hawking radiation from decoherence

Claus Kiefer
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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.

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Claus Kiefer. 2001-10-15. Hawking radiation from decoherence. https://doi.org/10.1088/0264-9381%2F18%2F22%2F101

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