Growth rate in the dynamical dark energy models

Dark energy models with a slowly rolling cosmological scalar field provide a popular alternative to the standard, time-independent cosmological constant model. We study the simultaneous evolution of background expansion and growth in the scalar field model with the Ratra–Peebles self-interaction pot...

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Autores principales: Avsajanishvili, Olga, Arkhipova, Natalia A., Samushia, Lado, Kahniashvili, Tina
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2014
Materias:
Regular Article - Theoretical Physics
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4445924/
https://www.ncbi.nlm.nih.gov/pubmed/26041971
http://dx.doi.org/10.1140/epjc/s10052-014-3127-5
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author Avsajanishvili, Olga
Arkhipova, Natalia A.
Samushia, Lado
Kahniashvili, Tina
author_facet Avsajanishvili, Olga
Arkhipova, Natalia A.
Samushia, Lado
Kahniashvili, Tina
author_sort Avsajanishvili, Olga
collection PubMed
description Dark energy models with a slowly rolling cosmological scalar field provide a popular alternative to the standard, time-independent cosmological constant model. We study the simultaneous evolution of background expansion and growth in the scalar field model with the Ratra–Peebles self-interaction potential. We use recent measurements of the linear growth rate and the baryon acoustic oscillation peak positions to constrain the model parameter [Formula: see text] that describes the steepness of the scalar field potential.
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spelling pubmed-44459242015-06-01 Growth rate in the dynamical dark energy models Avsajanishvili, Olga Arkhipova, Natalia A. Samushia, Lado Kahniashvili, Tina Eur Phys J C Part Fields Regular Article - Theoretical Physics Dark energy models with a slowly rolling cosmological scalar field provide a popular alternative to the standard, time-independent cosmological constant model. We study the simultaneous evolution of background expansion and growth in the scalar field model with the Ratra–Peebles self-interaction potential. We use recent measurements of the linear growth rate and the baryon acoustic oscillation peak positions to constrain the model parameter [Formula: see text] that describes the steepness of the scalar field potential. Springer Berlin Heidelberg 2014-11-05 2014 /pmc/articles/PMC4445924/ /pubmed/26041971 http://dx.doi.org/10.1140/epjc/s10052-014-3127-5 Text en © The Author(s) 2014 https://creativecommons.org/licenses/by/4.0/ Open AccessThis article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. Funded by SCOAP3 / License Version CC BY 4.0.
spellingShingle Regular Article - Theoretical Physics
Avsajanishvili, Olga
Arkhipova, Natalia A.
Samushia, Lado
Kahniashvili, Tina
Growth rate in the dynamical dark energy models
title Growth rate in the dynamical dark energy models
title_full Growth rate in the dynamical dark energy models
title_fullStr Growth rate in the dynamical dark energy models
title_full_unstemmed Growth rate in the dynamical dark energy models
title_short Growth rate in the dynamical dark energy models
title_sort growth rate in the dynamical dark energy models
topic Regular Article - Theoretical Physics
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4445924/
https://www.ncbi.nlm.nih.gov/pubmed/26041971
http://dx.doi.org/10.1140/epjc/s10052-014-3127-5
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