期刊
PHYSICS LETTERS B
卷 726, 期 4-5, 页码 918-925出版社
ELSEVIER
DOI: 10.1016/j.physletb.2013.10.003
关键词
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资金
- MINECO (Spain) [FIS2010-15640]
- AGAUR (Generalitat de Catalunya) [2009SGR-345]
- MES (Russia) [2.1839.2011]
- JSPS [22224003, 23540296]
- Grant agency of the Czech republic [P201/12/G028]
- ICREA Funding Source: Custom
- Grants-in-Aid for Scientific Research [23540296] Funding Source: KAKEN
We propose new version of massive F(R) gravity which is natural generalization of convenient massive ghost-free gravity. Its Hamiltonian formulation in scalar-tensor frame is developed. We show that such F(R) theory is ghost-free. The cosmological evolution of such theory is investigated. Despite the strong Bianchi identity constraint the possibility of cosmic acceleration (especially, in the presence of cold dark matter) is established. Ghost-free massive F(R,T) gravity is also proposed. (C) 2013 Elsevier B.V. All rights reserved.
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