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arXiv · 1403.5669

Rastall's Cosmology and its Observational Constraints

J. C. Fabris·O. F. Piattella·D. C. Rodrigues·M. H. Daouda
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Abstract

The Rastall's theory is a modification of General Relativity touching one of the cornestone of gravity theory: the conservation laws. In Rastall's theory, the energy-momentum tensor is not conserved anymore, depending now on the gradient of the Ricci curvature. In this sense, this theory can be seen as a classical implementation of quantum effects in a curved background space-time. We exploit this structure in order to reproduce some results of an effective theory of quantum loop cosmology. Later, we propose a model for the dark sector of the universe. In this case, the corresponding $Λ$CDM model appears as the only model consistent with observational data.

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J. C. Fabris, O. F. Piattella, D. C. Rodrigues, M. H. Daouda. 2014-03-22. Rastall's Cosmology and its Observational Constraints. https://doi.org/10.1063/1.4913336

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