Journal
PHYSICAL REVIEW D
Volume 69, Issue 10, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.69.103510
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We show that a general, exact cosmological solution, where the dynamics of a scalar field is assigned by an exponential potential, satisfies all the issues of the dark energy approach, both from a theoretical point of view and in comparison with available observational data. Moreover, tracking conditions are discussed, with a new treatment of the well known condition Gamma>1. We prove that the currently used expression for Gamma is wrong.
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