Rastall's Cosmology and its Observational Constraints

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 $\Lambda$CDM model appears as the only model consistent with observational data.

arXiv comment6 pages, 5 figures, submitted to the Proceedings of the CosmoSurII conference, Valparaíso, Chile, 27 - 31 May 2013

Cited by in corpus (8)

• Black Hole Solutions Surrounded by Perfect Fluid in Rastall Theory
• Neutron Stars in Rastall Gravity
• Complexity and Isotropization based Extended Models in the context of Electromagnetic Field: An Implication of Minimal Gravitational Decoupling
• Thermodynamic analysis of the static spherically symmetric field equations in Rastall theory
• Einstein Static Universe in Rastall Theory of Gravity
• Rastall gravity extension of the standard $\Lambda$CDM model: theoretical features and observational constraints
• On Gödel-type Solution in Rastall's Gravity
• Light propagation around a Kerr-like black hole immersed in an inhomogeneous anisotropic plasma in Rastall gravity: Analytical solutions to the equations of motion