Scalar field cosmological models with finite scale factor singularities
Abstract
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.
 Publication:

Physics Letters B
 Pub Date:
 January 2009
 DOI:
 10.1016/j.physletb.2008.06.077
 arXiv:
 arXiv:0801.2348
 Bibcode:
 2009PhLB..670..241C
 Keywords:

 98.80.Cq;
 98.80.Jk;
 Particletheory and fieldtheory models of the early Universe;
 Mathematical and relativistic aspects of cosmology;
 General Relativity and Quantum Cosmology;
 Astrophysics;
 High Energy Physics  Theory
 EPrint:
 6 pages, 3 figures