On the resolution of cosmic coincidence problem and phantom crossing with triple interacting fluids

Details On the resolution of cosmic coincidence problem and phantom crossing with triple interacting fluids On the resolution of cosmic coincidence problem and phantom crossing with triple interacting fluids

2008-10-08

arxiv.org/abs/0810.1444v6

Eur. Phys. J. C 64 (2009) 97-105

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

22 pages, 6 figures, to appear in Eur. Phys. J. C (2009)

Scientific paper

We here investigate a cosmological model in which three fluids interact with each other involving certain coupling parameters and energy exchange rates. The motivation of the problem stems from the puzzling `triple coincidence problem' which naively asks why the cosmic energy densities of matter, radiation and dark energy are almost of the same order of magnitude at the present time. In our model, we determine the conditions under triple interacting fluids will cross the phantom divide.

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