Signature change from Schutz's canonical quantum cosmology and its classical analogue

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dc.creatorPedram, P.
dc.creatorJalalzadeh, S.
dc.date2008-05-27
dc.date.accessioned2026-07-07T11:33:51Z
dc.date.available2026-07-07T11:33:51Z
dc.descriptionWe study the signature change in a perfect fluid Friedmann-Robertson-Walker quantum cosmological model. In this work the Schutz's variational formalism is applied to recover the notion of time. This gives rise to a Schrodinger-Wheeler-DeWitt equation with arbitrary ordering for the scale factor. We use the eigenfunctions in order to construct wave packets and evaluate the time-dependent expectation value of the scale factor which coincides with the ontological interpretation. We show that these solutions exhibit signature transitions from a finite Euclidean to a Lorentzian domain. Moreover, such models are equivalent to a classical system where, besides the perfect fluid, a repulsive fluid is present.
dc.description15 pages, 4 figures, to appear in PRD
dc.identifierhttps://arxiv.org/abs/0805.4099
dc.identifierhttp://arxiv.org/abs/0805.4099
dc.identifierPhys.Rev.D77:123529,2008
dc.identifierdoi:10.1103/PhysRevD.77.123529
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/198043
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleSignature change from Schutz's canonical quantum cosmology and its classical analogue
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