Quintessential Inflation with Dissipative fluid

Details Quintessential Inflation with Dissipative fluid Quintessential Inflation with Dissipative fluid

2000-05-24

arxiv.org/abs/gr-qc/0005104v3

Gen. Rel. Grav., Vol. 34, No. 4, 477-490 (April 2002)

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

8 pages, Revtex. The title has been changed. Some new features have been included

Scientific paper

We have investigated cosmological models with a self-interacting scalar field and a dissipative matter fluid as the sources of matter. Different variables are expressed in terms of a {\it generating function}. Exact solutions are obtained for one particular choice of the {\it generating function} The potential corresponding to this generating function is a standard tree-level potential arising in the perturbative regime in quantum field theory. With suitable choice of parameters, the scale factor in our model exhibits both inflationary behaviour in the early universe as well as an accelerating phase at late times with a decelerating period in between. It also satisfies the constraints for primeval nucleosynthesis and structure formation and seems to solve the cosmic coincidence problem. The solution exhibits a attractor nature towards a asymptotic de-sitter universe.

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