Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/3659
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dc.contributor.authorWallden, Petros-
dc.date.accessioned2008-10-31T11:09:15Z-
dc.date.available2008-10-31T11:09:15Z-
dc.date.issued2007-10-
dc.identifier.citationInternational Journal of Theoretical Physics, 2008, Vol.47, p1512en
dc.identifier.issn0020-7748 (Print)-
dc.identifier.issn1572-9575 (Online)-
dc.identifier.urihttp://hdl.handle.net/2289/3659-
dc.descriptionRestricted Access. An open-access version is available at arXiv.org (one of the alternative locations)en
dc.description.abstractWe investigate the possibility of assigning consistent probabilities to sets of histories characterized by whether they enter a particular subspace of the Hilbert space of a closed system during a given time interval. In particular we investigate the case that this subspace is a region of the configuration space. This corresponds to a particular class of coarse grainings of spacetime regions. We consider the arrival time problem, as a warm up, to deal with the problem of time in reparametrization invariant theories (as for example in canonical quantum gravity) which subsequently we examine. Decoherence conditions and probabilities for those application are derived. The resulting decoherence condition does not depend on the explicit form of the restricted propagator that was problematic for generalizations such as application in quantum cosmology. Closely related to our results, is the problem of tunnelling time as well as the quantum Zeno effect. Some interpretational comments conclude, and we discuss the applicability of this formalism to deal with the arrival time problem and the problem of time in general.en
dc.format.extent405368 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoenen
dc.publisherSpringeren
dc.relation.urihttp://arxiv.org/abs/gr-qc/0607072en
dc.relation.urihttp://dx.doi.org/10.1007/s10773-007-9592-yen
dc.relation.urihttp://adsabs.harvard.edu/abs/2008IJTP...47.1512Wen
dc.rights2008 Springeren
dc.subjectDecoherent (consistent) historiesen
dc.subjectProblem of timeen
dc.subjectArrival timeen
dc.subjectRestricted propagatoren
dc.titleSpacetime coarse grainings and the problem of time in the decoherent histories approach to quantum theoryen
dc.typeArticleen
Appears in Collections:Research Papers (TP)

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