RASTALL COSMOLOGY-Reference-Cited by-同舟云学术

RASTALL COSMOLOGY

Published:2012-01 Issue: Volume:18 Page:67-76
ISSN:2010-1945
Container-title:International Journal of Modern Physics: Conference Series
language:en
Short-container-title:Int. J. Mod. Phys. Conf. Ser.

Author:

FABRIS JÚLIO C.¹,PIATTELLA OLIVER F.¹,RODRIGUES DAVI C.¹,BATISTA CARLOS E. M.²,DAOUDA MAHAMADOU H.¹

Affiliation:

1. Departamento de Física, Universidade Federal do Espírito Santo, Vitória, Brazil

2. Departamento de Física, Universidade Estadual de Feira de Santana, Feira de Santana, Brazil

Abstract

We review the difficulties of the generalized Chaplygin gas model to fit observational data, due to the tension between background and perturbative tests. We argue that such issues may be circumvented by means of a self-interacting scalar field representation of the model. However, this proposal seems to be successful only if the self-interacting scalar field has a non-canonical form. The latter can be implemented in Rastall's theory of gravity, which is based on a modification of the usual matter conservation law. We show that, besides its application to the generalized Chaplygin gas model, other cosmological models based on Rastall's theory have many interesting and unexpected new features.

Publisher

World Scientific Pub Co Pte Lt

Link

https://www.worldscientific.com/doi/pdf/10.1142/S2010194512008227

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