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Viability of nonminimally coupled f (R) gravity

Title
Viability of nonminimally coupled f (R) gravity
Type
Article in International Scientific Journal
Year
2016
Authors
Bertolami, O
(Author)
FCUP
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Jorge Páramos
(Author)
FCUP
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Journal
Vol. 48
Pages: 1-13
ISSN: 0001-7701
Publisher: Springer Nature
Other information
Authenticus ID: P-00K-78B
Abstract (EN): In this work we explore the viability of nonminimally coupled matter-curvature gravity theories, namely the conditions required for the absence of tachyon instabilities and ghost degrees of freedom. We contrast our finds with recent claims of a pathological behaviour of this class of models, which resorted to, in our view, an incorrect analogy with k-essence.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 13
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