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• W2004035528 abstract "We study the dynamics of a flat Friedmann-Robertson-Walker universe filled with a self-interacting scalar field nonminimally coupled to the gravitational field. Dynamical equations for the system can be derived from a pointlike Lagrangian. For this system an additional Nother symmetry exists provided that the coupling constant $ensuremath{xi}$ is equal to 0 or $frac{1}{6}$. When $ensuremath{xi}=frac{1}{6}$ the scalar potential has to be constant. In this case we obtain an exact solution. We also analyze the behavior of the scalar field when $ensuremath{xi}ensuremath{ne}0, frac{1}{6}$. Most of the considered solutions are unphysical but there exists a very interesting case in which the effective cosmological constant is rapidly changing, which might lead to inflation." @default.
• W2004035528 created "2016-06-24" @default.
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• W2004035528 date "1991-11-15" @default.
• W2004035528 modified "2023-09-26" @default.
• W2004035528 title "Scalar field, nonminimal coupling, and cosmology" @default.
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• W2004035528 doi "https://doi.org/10.1103/physrevd.44.3136" @default.
• W2004035528 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/10013769" @default.
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