Quantum Nature of the Big Bang

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dc.creatorAshtekar, Abhay
dc.creatorPawlowski, Tomasz
dc.creatorSingh, Parampreet
dc.date2006-02-22
dc.date2006-04-06
dc.date.accessioned2026-07-07T10:44:06Z
dc.date.available2026-07-07T10:44:06Z
dc.descriptionSome long standing issues concerning the quantum nature of the big bang are resolved in the context of homogeneous isotropic models with a scalar field. Specifically, the known results on the resolution of the big bang singularity in loop quantum cosmology are significantly extended as follows: i) the scalar field is shown to serve as an internal clock, thereby providing a detailed realization of the `emergent time' idea; ii) the physical Hilbert space, Dirac observables and semi-classical states are constructed rigorously; iii) the Hamiltonian constraint is solved numerically to show that the big bang is replaced by a big bounce. Thanks to the non-perturbative, background independent methods, unlike in other approaches the quantum evolution is deterministic across the deep Planck regime.
dc.descriptionRevtex4, 4 Pages, 2 Figures. Minor changes to match the published version in Physical Review Letters
dc.identifierhttps://arxiv.org/abs/gr-qc/0602086
dc.identifierhttp://arxiv.org/abs/gr-qc/0602086
dc.identifierPhys.Rev.Lett.96:141301,2006
dc.identifierdoi:10.1103/PhysRevLett.96.141301
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/182476
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Theory
dc.titleQuantum Nature of the Big Bang
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