Brane $f(\cal R)$ gravity
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arXiv
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| Hauptverfasser: | , , , |
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| Format: | Preprint |
| Veröffentlicht: |
2009
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| _version_ | 1866909389997211648 |
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| author | Borzou, A. Sepangi, H. R. Shahidi, S. Yousefi, R. |
| author_facet | Borzou, A. Sepangi, H. R. Shahidi, S. Yousefi, R. |
| contents | We consider a brane world scenario in which the bulk action is assumed to have the form of a generic function of the Ricci scalar $f(\mathcal{R})$ and derive the resulting Einstein field equations on the brane. In a constant curvature bulk a conserved geometric quantity appears in the field equations which can be associated with matter. We present cosmological and spherically symmetric solutions by assuming specific forms for $f(\mathcal{R})$ and show that the former can explain an accelerated expanding universe while the latter may account for galaxy rotation curves. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_0910_1933 |
| institution | arXiv |
| publishDate | 2009 |
| record_format | arxiv |
| spellingShingle | Brane $f(\cal R)$ gravity Borzou, A. Sepangi, H. R. Shahidi, S. Yousefi, R. General Relativity and Quantum Cosmology High Energy Physics - Theory We consider a brane world scenario in which the bulk action is assumed to have the form of a generic function of the Ricci scalar $f(\mathcal{R})$ and derive the resulting Einstein field equations on the brane. In a constant curvature bulk a conserved geometric quantity appears in the field equations which can be associated with matter. We present cosmological and spherically symmetric solutions by assuming specific forms for $f(\mathcal{R})$ and show that the former can explain an accelerated expanding universe while the latter may account for galaxy rotation curves. |
| title | Brane $f(\cal R)$ gravity |
| topic | General Relativity and Quantum Cosmology High Energy Physics - Theory |
| url | https://arxiv.org/abs/0910.1933 |