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Expansion history and f(R) modified gravity
We attempt to fit cosmological data using f(R) modified Lagrangians containing inverse powers of the Ricci scalar varied with respect to the metric. While we can confirm the a ~ t^1/2 behaviour at medium to high redshifts reported elsewhere, we are still able to fit the supernova, CMB and baryon osc...
| Autores principales: | , |
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| Lenguaje: | eng |
| Publicado: |
2007
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1088/1475-7516/2007/12/005 http://cds.cern.ch/record/1014382 |