Quantum cosmology with big-brake singularity

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dc.creatorKamenshchik, Alexander
dc.creatorKiefer, Claus
dc.creatorSandhoefer, Barbara
dc.date2007-05-11
dc.date2007-10-01
dc.date.accessioned2026-07-07T10:55:30Z
dc.date.available2026-07-07T10:55:30Z
dc.descriptionWe investigate a cosmological model with a big-brake singularity in the future: while the first time derivative of the scale factor goes to zero, its second time derivative tends to minus infinity. Although we also discuss the classical version of the model in some detail, our main interest lies in its quantization. We formulate the Wheeler-DeWitt equation and derive solutions describing wave packets. We show that all such solutions vanish in the region of the classical singularity, a behaviour which we interpret as singularity avoidance. We then discuss the same situation in loop quantum cosmology. While this leads to a different factor ordering, the singularity is there avoided, too.
dc.description24 pages, 7 figures, figures improved, references added, conceptual clarifications included
dc.identifierhttps://arxiv.org/abs/0705.1688
dc.identifierhttp://arxiv.org/abs/0705.1688
dc.identifierPhys.Rev.D76:064032,2007
dc.identifierdoi:10.1103/PhysRevD.76.064032
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/186099
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleQuantum cosmology with big-brake singularity
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