Constraint on the equation of state parameter (ω) in non-minimally coupled f(Q) gravity

We study observational constraints on the modified symmetric teleparallel gravity, the non-metricity f(Q) gravity, which reproduces background expansion of the universe. For this purpose, we use Hubble measurements, Baryonic Acoustic Oscillations (BAO), 1048 Pantheon supernovae type Ia data sample w...

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Autores principales:	Sanjay Mandal, P.K. Sahoo
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/569c751a7f884c56b6fb45204bb6c852
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spelling	oai:doaj.org-article:569c751a7f884c56b6fb45204bb6c8522021-12-04T04:32:46ZConstraint on the equation of state parameter (ω) in non-minimally coupled f(Q) gravity0370-269310.1016/j.physletb.2021.136786https://doaj.org/article/569c751a7f884c56b6fb45204bb6c8522021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0370269321007267https://doaj.org/toc/0370-2693We study observational constraints on the modified symmetric teleparallel gravity, the non-metricity f(Q) gravity, which reproduces background expansion of the universe. For this purpose, we use Hubble measurements, Baryonic Acoustic Oscillations (BAO), 1048 Pantheon supernovae type Ia data sample which integrate SuperNova Legacy Survey (SNLS), Sloan Digital Sky Survey (SDSS), Hubble Space Telescope (HST) survey, Panoramic Survey Telescope and Rapid Response System (Pan-STARRS1). We confront our cosmological model against observational samples to set constraints on the parameters using Markov Chain Monte Carlo (MCMC) methods. We find the equation of state parameter ω=−0.853−0.020+0.015 and ω=−0.796−0.074+0.049 for Hubble and Pantheon samples, respectively. As a result, the f(Q) model shows the quintessence behavior and deviates from ΛCDM.Sanjay MandalP.K. SahooElsevierarticlePhysicsQC1-999ENPhysics Letters B, Vol 823, Iss , Pp 136786- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Sanjay Mandal P.K. Sahoo Constraint on the equation of state parameter (ω) in non-minimally coupled f(Q) gravity
description	We study observational constraints on the modified symmetric teleparallel gravity, the non-metricity f(Q) gravity, which reproduces background expansion of the universe. For this purpose, we use Hubble measurements, Baryonic Acoustic Oscillations (BAO), 1048 Pantheon supernovae type Ia data sample which integrate SuperNova Legacy Survey (SNLS), Sloan Digital Sky Survey (SDSS), Hubble Space Telescope (HST) survey, Panoramic Survey Telescope and Rapid Response System (Pan-STARRS1). We confront our cosmological model against observational samples to set constraints on the parameters using Markov Chain Monte Carlo (MCMC) methods. We find the equation of state parameter ω=−0.853−0.020+0.015 and ω=−0.796−0.074+0.049 for Hubble and Pantheon samples, respectively. As a result, the f(Q) model shows the quintessence behavior and deviates from ΛCDM.
format	article
author	Sanjay Mandal P.K. Sahoo
author_facet	Sanjay Mandal P.K. Sahoo
author_sort	Sanjay Mandal
title	Constraint on the equation of state parameter (ω) in non-minimally coupled f(Q) gravity
title_short	Constraint on the equation of state parameter (ω) in non-minimally coupled f(Q) gravity
title_full	Constraint on the equation of state parameter (ω) in non-minimally coupled f(Q) gravity
title_fullStr	Constraint on the equation of state parameter (ω) in non-minimally coupled f(Q) gravity
title_full_unstemmed	Constraint on the equation of state parameter (ω) in non-minimally coupled f(Q) gravity
title_sort	constraint on the equation of state parameter (ω) in non-minimally coupled f(q) gravity
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/569c751a7f884c56b6fb45204bb6c852
work_keys_str_mv	AT sanjaymandal constraintontheequationofstateparameterōinnonminimallycoupledfqgravity AT pksahoo constraintontheequationofstateparameterōinnonminimallycoupledfqgravity
_version_	1718373030987563008

Constraint on the equation of state parameter (ω) in non-minimally coupled f(Q) gravity

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