Dark energy exponential potential models as curvature quintessence

Details Dark energy exponential potential models as curvature quintessence Dark energy exponential potential models as curvature quintessence

2005-07-19

arxiv.org/abs/astro-ph/0507438v1

Class.Quant.Grav.23:1205-1216,2006

Astronomy and Astrophysics

Astrophysics

8 pages, 2 figures, accepted for publication on Physical Review D

Scientific paper

10.1088/0264-9381/23/4/009

It has been recently shown that, under some general conditions, it is always possible to find a fourth order gravity theory capable of reproducing the same dynamics of a given dark energy model. Here, we discuss this approach for a dark energy model with a scalar field evolving under the action of an exponential potential. In absence of matter, such a potential can be recovered from a fourth order theory via a conformal transformation. Including the matter term, the function f(R) entering the generalized gravity Lagrangian can be reconstructed according to the dark energy model.

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