Superinflation, quintessence, and the avoidance of the initial singularity

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dc.creatorSaa, A.
dc.creatorGunzig, E.
dc.creatorBrenig, L.
dc.creatorFaraoni, V.
dc.creatorFilho, T. M. Rocha
dc.creatorFigueiredo, A.
dc.date2000-12-28
dc.date.accessioned2026-07-07T03:25:33Z
dc.date.available2026-07-07T03:25:33Z
dc.descriptionWe consider the dynamics of a spatially flat universe dominated by a self-interacting nonminimally coupled scalar field. The structure of the phase space and complete phase portraits for the conformal coupling case are given. It is shown that the non-minimal coupling modifies drastically the dynamics of the universe. New cosmological behaviors are identified, including superinflation ($\dot{H}>0$), avoidance of big bang singularities through classical birth of the universe from empty Minkowski space, and spontaneous entry into and exit from inflation. The relevance of this model to the description of quintessence is discussed.
dc.descriptionRevTex, 10 pages, 4 figures, To appear in the proceedings of the 5th Peyresq meeting
dc.identifierhttps://arxiv.org/abs/gr-qc/0012105
dc.identifierhttp://arxiv.org/abs/gr-qc/0012105
dc.identifierInt.J.Theor.Phys. 40 (2001) 2295
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/33752
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleSuperinflation, quintessence, and the avoidance of the initial singularity
dc.typetext

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