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Modified Friedmann Equation from Nonminimally Coupled Theories of Gravity

Title
Modified Friedmann Equation from Nonminimally Coupled Theories of Gravity
Type
Article in International Scientific Journal
Year
2014
Authors
Orfeu Bertolami
(Author)
FCUP
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Jorge Páramos
(Author)
FCUP
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Journal
Vol. 89
Initial page: 044012
ISSN: 0556-2821
Scientific classification
FOS: Natural sciences > Physical sciences
CORDIS: Physical sciences > Physics > Relativity
Other information
Authenticus ID: P-009-77E
Abstract (EN): 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.
Language: Portuguese
Type (Professor's evaluation): Scientific
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