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A note on viability of nonminimally coupled f(R) theory
Stockholm University, Nordic Institute for Theoretical Physics (Nordita).
Number of Authors: 2
2016 (English)In: General Relativity and Gravitation, ISSN 0001-7701, E-ISSN 1572-9532, Vol. 48, no 7, 97Article in journal (Refereed) Published
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:su:diva-132566DOI: 10.1007/s10714-016-2087-5ISI: 000378561600015OAI: oai:DiVA.org:su-132566DiVA: diva2:953598
Available from: 2016-08-18 Created: 2016-08-15 Last updated: 2016-08-18Bibliographically approved

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Koivisto, Tomi S.
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Nordic Institute for Theoretical Physics (Nordita)
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