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Cited by 311

The DOI matches its Crossref record; 68 of the 68 references it cites were found in a registry or an index.

Modified gravity with arbitrary coupling between matter and geometry

Open access
Harko, T.·2008·Physics Letters B
DOI 10.1016/j.physletb.2008.10.007
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Abstract

The field equations of a generalized f(R) type gravity model, in which there is an arbitrary coupling between matter and geometry, are obtained. The equations of motion for test particles are derived from a variational principle in the particular case in which the Lagrange density of the matter is an arbitrary function of the energy-density of the matter only. Generally, the motion is non-geodesic, and takes place in the presence of an extra force orthogonal to the four-velocity. The Newtonian limit of the model is also considered. The perihelion precession of an elliptical planetary orbit in the presence of an extra force is obtained in a general form, and the magnitude of the extra gravitational effects is constrained in the case of a constant extra force by using Solar System observations.

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Metadata

Authors
Harko, T.
Venue
Physics Letters B
Publisher
Elsevier BV
Published
2008-11
Volume
669
Issue
5
Pages
376-379
ISSN
0370-2693 (ISSN-L)
DOI
10.1016/j.physletb.2008.10.007
OpenAlex
W2027627752
Cited by
311
References
68
FWCI
4.32
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Modified gravity with arbitrary coupling between matter and geometry. https://app.cochat.ai/papers/10.1016/j.physletb.2008.10.007
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Harko, T. (2008). Modified gravity with arbitrary coupling between matter and geometry. Physics Letters B. https://doi.org/10.1016/j.physletb.2008.10.007

Data sources

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.