If time is a local observable, then Hawking radiation is unitary

H. Nikolic

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arXiv · 1407.8058

If time is a local observable, then Hawking radiation is unitary

H. Nikolic

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Abstract

In the usual formulation of quantum theory, time is a global classical evolution parameter, not a local quantum observable. On the other hand, both canonical quantum gravity (which lacks fundamental time-evolution parameter) and the principle of spacetime covariance (which insists that time should be treated on an equal footing with space) suggest that quantum theory should be slightly reformulated, in a manner that promotes time to a local observable. Such a reformulated quantum theory is unitary in a more general sense than the usual quantum theory. In particular, this promotes the non-unitary Hawking radiation to a unitary phenomenon, which avoids the black-hole information paradox.

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H. Nikolic. 2014-07-28. If time is a local observable, then Hawking radiation is unitary. https://arxiv.org/abs/1407.8058

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