Superinflation, quintessence, and nonsingular cosmologies

Details Superinflation, quintessence, and nonsingular cosmologies Superinflation, quintessence, and nonsingular cosmologies

2000-12-20

arxiv.org/abs/gr-qc/0012085v1

Phys.Rev. D63 (2001) 067301

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

4 pages, 2 figures

Scientific paper

10.1103/PhysRevD.63.067301

The dynamics of a universe dominated by a self-interacting nonminimally coupled scalar field are considered. The structure of the phase space and complete phase portraits are given. New dynamical behaviors include superinflation ($\dot{H}>0$), avoidance of big bang singularities through classical birth of the universe, and spontaneous entry into and exit from inflation. This model is promising for describing quintessence as a nonminimally coupled scalar field.

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