skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: 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 ΛCDM model appears as the only model consistent with observational data.

Authors:
; ;  [1];  [2]
  1. Departamento de Física - Universidade Federal do Espirito Santo (Brazil)
  2. Université de Niamey (Niger)
Publication Date:
OSTI Identifier:
22391032
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1647; Journal Issue: 1; Conference: Conference on Cosmology and Gravitation in the Southern Cone, Valparaiso (Chile), 27-31 May 2013; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; CONSERVATION LAWS; COSMOLOGICAL CONSTANT; COSMOLOGICAL MODELS; COSMOLOGY; DIAGRAMS; ENERGY-MOMENTUM TENSOR; GENERAL RELATIVITY THEORY; GRAVITATION; LIMITING VALUES; LOOP QUANTUM GRAVITY; MODIFICATIONS; SPACE-TIME; UNIVERSE

Citation Formats

Fabris, Júulio C., Piattella, Oliver F., Rodrigues, Davi C., and Daouda, Mahamadou H.. Rastall’s cosmology and its observational constraints. United States: N. p., 2015. Web. doi:10.1063/1.4913336.
Fabris, Júulio C., Piattella, Oliver F., Rodrigues, Davi C., & Daouda, Mahamadou H.. Rastall’s cosmology and its observational constraints. United States. doi:10.1063/1.4913336.
Fabris, Júulio C., Piattella, Oliver F., Rodrigues, Davi C., and Daouda, Mahamadou H.. Thu . "Rastall’s cosmology and its observational constraints". United States. doi:10.1063/1.4913336.
@article{osti_22391032,
title = {Rastall’s cosmology and its observational constraints},
author = {Fabris, Júulio C. and Piattella, Oliver F. and Rodrigues, Davi C. and Daouda, Mahamadou H.},
abstractNote = {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 ΛCDM model appears as the only model consistent with observational data.},
doi = {10.1063/1.4913336},
journal = {AIP Conference Proceedings},
number = 1,
volume = 1647,
place = {United States},
year = {Thu Mar 26 00:00:00 EDT 2015},
month = {Thu Mar 26 00:00:00 EDT 2015}
}