Realistic clocks, universal decoherence and the black hole information paradox

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dc.creatorGambini, Rodolfo
dc.creatorPorto, Rafael
dc.creatorPullin, Jorge
dc.date2004-06-28
dc.date.accessioned2026-07-07T04:17:07Z
dc.date.available2026-07-07T04:17:07Z
dc.descriptionOrdinary quantum mechanics is formulated on the basis of the existence of an ideal classical clock external to the system under study. This is clearly an idealization. As emphasized originally by Salecker and Wigner and more recently by other authors, there exist limits in nature to how ``classical'' even the best possible clock can be. When one introduces realistic clocks, quantum mechanics ceases to be unitary and a fundamental mechanism of decoherence of quantum states arises. We estimate the rate of universal loss of unitarity using optimal realistic clocks. In particular we observe that the rate is rapid enough to eliminate the black hole information puzzle: all information is lost through the fundamental decoherence before the black hole can evaporate. This improves on a previous calculation we presented with a sub-optimal clock in which only part of the information was lost by the time of evaporation.
dc.description3 Pages, RevTex, no figures
dc.identifierhttps://arxiv.org/abs/hep-th/0406260
dc.identifierhttp://arxiv.org/abs/hep-th/0406260
dc.identifierPhys.Rev.Lett. 93 (2004) 240401
dc.identifierdoi:10.1103/PhysRevLett.93.240401
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/52624
dc.subjectHigh Energy Physics - Theory
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectQuantum Physics
dc.titleRealistic clocks, universal decoherence and the black hole information paradox
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