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Modified Friedmann Equation from Nonminimally Coupled Theories of Gravity

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arxiv 1311.5615 v1 pith:DMF5DCXD submitted 2013-11-21 gr-qc

Orfeu Bertolami , Jorge Páramos This is my paper · ORCID
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keywords coupledequationfriedmanngravitynonminimallytheoriesambiguityassessed
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In this work we study how nonminimally coupled theories of gravity modify the usual Friedmann equation, and develop two methods to treat these. The ambiguity in the form of the Lagrangian density of a perfect fluid is emphasized, and the impact of different dominant matter species is assessed. The Cosmological Constant problem is also discussed.

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