Statefinder diagnosis of nearly flat and thawing non-minimal quintessence

Details Statefinder diagnosis of nearly flat and thawing non-minimal quintessence Statefinder diagnosis of nearly flat and thawing non-minimal quintessence

2009-10-28

arxiv.org/abs/0910.5295v1

Europhys.Lett.88:30002,2009

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

8 figures. To appear in Euro. Phys. Lett. 2009

Scientific paper

10.1209/0295-5075/88/30002

Non-minimally coupled scalar field models of dark energy are equivalent to an interacting quintessence in the Einstein's frame. Considering two special important choices of the potential of the scalar field, i.e. nearly flat and thawing potential, one has an analytical expression for the equation of state parameter as a function of the density parameter of the scalar field for any choice. Here we investigate the non-minimal quintessence model by applying the method of statefinder diagnosis to it and plotting the evolutionary trajectories of the statefinder parameters.

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