Scalar field cosmological models with finite scale factor singularities

We construct a scalar field based cosmological model, possessing a cosmological singularity characterized by a finite value of the cosmological radius and an infinite scalar curvature. Using the methods of the qualitative theory of differential equations, we give a complete description of the cosmol...

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Bibliographic Details
Published in:	Physics letters. B Vol. 670; no. 4-5; pp. 241 - 245
Main Authors:	Cannata, Francesco, Kamenshchik, Alexander Y., Regoli, Daniele
Format:	Journal Article
Language:	English
Published:	Kidlington Elsevier B.V 05-01-2009 Elsevier
Subjects:	Cosmological singularities Future of the universe Scalar fields in cosmology Scalar fields in cosmology 98.80.Jk Cosmological singularities Future of the universe 98.80.Cq
Online Access:	Get full text
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Summary:	We construct a scalar field based cosmological model, possessing a cosmological singularity characterized by a finite value of the cosmological radius and an infinite scalar curvature. Using the methods of the qualitative theory of differential equations, we give a complete description of the cosmological evolutions in the model under consideration. There are four classes of evolutions, two of which have finite lifetimes, while the other two undergo an infinite expansion. We discuss also the relation between the dynamics of the model and the intermediate inflation phenomenology.
ISSN:	0370-2693 1873-2445
DOI:	10.1016/j.physletb.2008.06.077