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A note on viability of nonminimally coupled f(R) theory
2016 (English)In: General Relativity and Gravitation, ISSN 0001-7701, E-ISSN 1572-9532, Vol. 48, no 7, 97Article in journal (Refereed) Published
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Abstract [en]

Consistency conditions for nonminimally coupled f(R) theories have been derived by requiring the absence of tachyons and instabilities in the scalar fluctuations. This note confirms these results and clarifies a subtlety regarding different definitions of sound speeds.

Place, publisher, year, edition, pages
2016. Vol. 48, no 7, 97
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Physical Sciences
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URN: urn:nbn:se:kth:diva-189794DOI: 10.1007/s10714-016-2087-5ISI: 000378561600015Scopus ID: 2-s2.0-84975819727OAI: oai:DiVA.org:kth-189794DiVA: diva2:949545
Note

QC 20160720

Available from: 2016-07-20 Created: 2016-07-15 Last updated: 2016-07-20Bibliographically approved

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Koivisto, Tomi S.
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