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arXiv · hep-th/9907198

Tracker fields from nonminimally coupled theory

R. de Ritis·A. A. Marino·C. Rubano·P. Scudellaro
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Abstract

We extend the concept of quintessence to a flat nonminimally coupled scalar - tensor theories of gravity. By means of Noether's symmetries for the cosmological pointlike Lagrangian L, it is possible to exhibit exact solutions for a class of models depending on a free parameter s. This parameter comes out in the relationship existing between the coupling F(ϕ) and the potential V(ϕ) because of such a symmetry for L. When inverse power law potentials are taken in account, a whole family of exact solutions parametrized by such an s is proposed as a class of tracker fields, and some considerations are made about them.

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R. de Ritis, A. A. Marino, C. Rubano, P. Scudellaro. 1999-07-27. Tracker fields from nonminimally coupled theory. https://doi.org/10.1103/physrevd.62.043506

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