Quasi-Newtonian Cosmological Models in Scalar-Tensor Theories of Gravity

Quasi-Newtonian Cosmological Models in Scalar-Tensor Theories of Gravity

In this contribution, classes of shear-free cosmological dust models with irrotational fluid flows will be investigated in the context of scalar-tensor theories of gravity. In particular, the integrability conditions describing a consistent evolution of the linearised field equations of quasi-Newto...

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Main Authors: Heba Sami Abdulrahman, Amare Abebe
Format: Article
Language:English
Published: Andromeda Publishing and Academic Services 2018-05-01
Series:Letters in High Energy Physics
Subjects:
f(R) gravity, scalar field, quasi-Newtonian cosmologies, perturbations
Online Access:http://journals.andromedapublisher.com/index.php/LHEP/article/view/27
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spelling doaj-03b6e962ccc1479fb9273cd591812c822020-11-25T02:58:07ZengAndromeda Publishing and Academic ServicesLetters in High Energy Physics2632-27142018-05-011110.31526/LHEP.1.2018.05Quasi-Newtonian Cosmological Models in Scalar-Tensor Theories of GravityHeba Sami Abdulrahman0Amare AbebeNorth-West University In this contribution, classes of shear-free cosmological dust models with irrotational fluid flows will be investigated in the context of scalar-tensor theories of gravity. In particular, the integrability conditions describing a consistent evolution of the linearised field equations of quasi-Newtonian universes are pre- sented. We also derive the covariant density and velocity propagation equations of such models and analyse the corresponding solutions to these perturbation equations. http://journals.andromedapublisher.com/index.php/LHEP/article/view/27f(R) gravity, scalar field, quasi-Newtonian cosmologies, perturbations
collection DOAJ
language English
format Article
sources DOAJ
author Heba Sami Abdulrahman
Amare Abebe
spellingShingle Heba Sami Abdulrahman
Amare Abebe
Quasi-Newtonian Cosmological Models in Scalar-Tensor Theories of Gravity
Letters in High Energy Physics
f(R) gravity, scalar field, quasi-Newtonian cosmologies, perturbations
author_facet Heba Sami Abdulrahman
Amare Abebe
author_sort Heba Sami Abdulrahman
title Quasi-Newtonian Cosmological Models in Scalar-Tensor Theories of Gravity
title_short Quasi-Newtonian Cosmological Models in Scalar-Tensor Theories of Gravity
title_full Quasi-Newtonian Cosmological Models in Scalar-Tensor Theories of Gravity
title_fullStr Quasi-Newtonian Cosmological Models in Scalar-Tensor Theories of Gravity
title_full_unstemmed Quasi-Newtonian Cosmological Models in Scalar-Tensor Theories of Gravity
title_sort quasi-newtonian cosmological models in scalar-tensor theories of gravity
publisher Andromeda Publishing and Academic Services
series Letters in High Energy Physics
issn 2632-2714
publishDate 2018-05-01
description In this contribution, classes of shear-free cosmological dust models with irrotational fluid flows will be investigated in the context of scalar-tensor theories of gravity. In particular, the integrability conditions describing a consistent evolution of the linearised field equations of quasi-Newtonian universes are pre- sented. We also derive the covariant density and velocity propagation equations of such models and analyse the corresponding solutions to these perturbation equations.
topic f(R) gravity, scalar field, quasi-Newtonian cosmologies, perturbations
url http://journals.andromedapublisher.com/index.php/LHEP/article/view/27
work_keys_str_mv AT hebasamiabdulrahman quasinewtoniancosmologicalmodelsinscalartensortheoriesofgravity
AT amareabebe quasinewtoniancosmologicalmodelsinscalartensortheoriesofgravity
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