Issue
EPL
Volume 88, Number 3, November 2009
Article Number 30002
Number of page(s) 6
Section General
DOI http://dx.doi.org/10.1209/0295-5075/88/30002
Published online 11 November 2009
EPL, 88 (2009) 30002
DOI: 10.1209/0295-5075/88/30002

Statefinder diagnosis of nearly flat and thawing non-minimal quintessence

A. Shojai and F. Shojai

Department of Physics, University of Tehran - Tehran, Iran


received 8 September 2009; accepted in final form 15 October 2009; published November 2009
published online 11 November 2009

Abstract
Non-minimally coupled scalar field models of dark energy are equivalent to an interacting quintessence in 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.

PACS
04.50.Kd - Modified theories of gravity.

© EPLA 2009