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arxiv: 1711.04026 · v2 · pith:H4EOGKMPnew · submitted 2017-11-10 · 🌀 gr-qc · astro-ph.CO

Perfect fluid solutions of Brans-Dicke and f(R)cosmology

classification 🌀 gr-qc astro-ph.CO
keywords cosmologysolutionsansatzbrans-dickefactorfieldfluidgenerates
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Brans-Dicke cosmology with an (inverse) power-law potential is revisited in the light of modern quintessence and inflation models. A simple ansatz relating scale factor and scalar field recovers most of the known solutions and generates new ones. A phase space interpretation of the ansatz is provided and these universes are mapped into solutions of f(R) cosmology.

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