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Cited by 871

The DOI matches its Crossref record; 73 of the 73 references it cites were found in a registry or an index.

Class of viable modifiedf(R)gravities describing inflation and the onset of accelerated expansion

Open access
Cognola, G., Elizalde, E., Nojiri, S., Odintsov, S. D., Sebastiani, L., Zerbini, S.·2008·Physical Review D
DOI 10.1103/physrevd.77.046009
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Abstract

A general approach to viable modified $f(R)$ gravity is developed in both the Jordan and the Einstein frames. A class of exponential, realistic modified gravities is introduced and investigated with care. Special focus is made on step-class models, most promising from the phenomenological viewpoint and which provide a natural way to classify all viable modified gravities. One- and two-step models are explicitly considered, but the analysis is extensible to $N$-step models. Both inflation in the early universe and the onset of recent accelerated expansion arise in these models in a natural, unified way. Moreover, it is demonstrated that models in this category easily pass all local tests, including stability of spherical body solution, nonviolation of Newton's law, and generation of a very heavy positive mass for the additional scalar degree of freedom.

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Metadata

Authors
Cognola, G., Elizalde, E., Nojiri, S., Odintsov, S. D., Sebastiani, L., & Zerbini, S.
Venue
Physical Review D
Publisher
American Physical Society (APS)
Published
2008-02-27
Volume
77
Issue
4
Pages
046009-046009
ISSN
  • 0556-2821 (ISSN-L)
  • 1550-7998
  • 1550-2368
DOI
10.1103/physrevd.77.046009
OpenAlex
W1993929115
Cited by
871
References
73
FWCI
27.71
Type
journal article
Language
en
Open access
green

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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.