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INTRODUCTION TO MODIFIED GRAVITY AND GRAVITATIONAL ALTERNATIVE FOR DARK ENERGY
Open accessAbstract
We review various modified gravities considered as gravitational alternative for dark energy. Specifically, we consider the versions of f(R), f(G) or f(R, G) gravity, model with non-linear gravitational coupling or string-inspired model with Gauss-Bonnet-dilaton coupling in the late universe where they lead to cosmic speed-up. It is shown that some of such theories may pass the Solar System tests. On the same time, it is demonstrated that they have quite rich cosmological structure: they may naturally describe the effective (cosmological constant, quintessence or phantom) late-time era with a possible transition from decceleration to acceleration thanks to gravitational terms which increase with scalar curvature decrease. The possibility to explain the coincidence problem as the manifestation of the universe expansion in such models is mentioned. The late (phantom or quintessence) universe filled with dark fluid with inhomogeneous equation of state (where inhomogeneous terms are originated from the modified gravity) is also described.
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Citations
Cites
Cosmological constraints on a classical limit of quantum gravity
Easson, D. A., Schuller, F. P., Trodden, M., & Wohlfarth, M. N. R. (2005) · Physical Review D · doi:10.1103/physrevd.72.043504 · Cited by 25
Cited by
Sotiriou, T. P., & Faraoni, V. (2010) · Reviews of Modern Physics · doi:10.1103/revmodphys.82.451 · Cited by 4,519
Harko, T., Lobo, F. S. N., Nojiri, S., & Odintsov, S. D. (2011) · Physical Review D · doi:10.1103/physrevd.84.024020 · Cited by 2,772
Self-citationDark torsion as the cosmic speed-up
Bengochea, G. R., & Ferraro, R. (2009) · Physical Review D · doi:10.1103/physrevd.79.124019 · Cited by 1,207
Extended theories of gravity and their cosmological and astrophysical applications
Capozziello, S., & Francaviglia, M. (2008) · General Relativity and Gravitation · doi:10.1007/s10714-007-0551-y · Cited by 874
Investigating the ultraviolet properties of gravity with a Wilsonian renormalization group equation
Codello, A., Percacci, R., & Rahmede, C. (2009) · Annals of Physics · doi:10.1016/j.aop.2008.08.008 · Cited by 538
Metadata
- Authors
- NOJIRI, S., & ODINTSOV, S. D.
- Venue
- International Journal of Geometric Methods in Modern Physics
- Publisher
- World Scientific Pub Co Pte Ltd
- Published
- 2007-02
- Volume
- 04
- Issue
- 01
- Pages
- 115-145
- ISSN
- 0219-8878 (ISSN-L)
- 1793-6977
- OpenAlex
- W2949588884
- Cited by
- 2,828
- References
- 1
- FWCI
- 75.69
- Type
- journal article
- Language
- en
- Open access
- green
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- NOJIRI, S., & ODINTSOV, S. D. (2007). INTRODUCTION TO MODIFIED GRAVITY AND GRAVITATIONAL ALTERNATIVE FOR DARK ENERGY. International Journal of Geometric Methods in Modern Physics. https://doi.org/10.1142/s0219887807001928
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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