Effective gravity formulation that avoids singularities in quantum FRW cosmologies

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dc.creatorHaro, Jaume
dc.creatorElizalde, Emilio
dc.date2009-01-19
dc.date.accessioned2026-07-07T12:31:37Z
dc.date.available2026-07-07T12:31:37Z
dc.descriptionAssuming that time exists, a new, effective formulation of gravity is introduced, which lies in between the Wheeler-DeWitt approach and ordinary QFT. Remarkably, the Penrose-Hawking singularity of usual Friedman-Robertson-Walker cosmologies is naturally avoided there. The theory is made explicit via specific examples, and compared with loop quantum cosmology. It is argued that it is the regularization of the classical Hamiltonian performed in this last theory what avoid the singularity, rather than quantum effects as in our case.
dc.description11 pages, no figures
dc.identifierhttps://arxiv.org/abs/0901.2861
dc.identifierhttp://arxiv.org/abs/0901.2861
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/216506
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleEffective gravity formulation that avoids singularities in quantum FRW cosmologies
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