Dynamical coherent states and physical solutions of quantum cosmological bounces

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dc.creatorBojowald, Martin
dc.date2007-03-29
dc.date.accessioned2026-07-07T11:21:57Z
dc.date.available2026-07-07T11:21:57Z
dc.descriptionA new model is studied which describes the quantum behavior of transitions through an isotropic quantum cosmological bounce in loop quantum cosmology sourced by a free and massless scalar field. As an exactly solvable model even at the quantum level, it illustrates properties of dynamical coherent states and provides the basis for a systematic perturbation theory of loop quantum gravity. The detailed analysis is remarkably different from what is known for harmonic oscillator coherent states. Results are evaluated with regard to their implications in cosmology, including a demonstration that in general quantum fluctuations before and after the bounce are unrelated. Thus, even within this solvable model the condition of classicality at late times does not imply classicality at early times before the bounce without further assumptions. Nevertheless, the quantum state does evolve deterministically through the bounce.
dc.description30 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/gr-qc/0703144
dc.identifierhttp://arxiv.org/abs/gr-qc/0703144
dc.identifierPhys.Rev.D75:123512,2007
dc.identifierdoi:10.1103/PhysRevD.75.123512
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/194416
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Theory
dc.titleDynamical coherent states and physical solutions of quantum cosmological bounces
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