Mixed fluid cosmological model in $f(R,T)$ gravity

Parbati Sahoo; Barkha Taori; K. L. Mahanta

doi:10.1139/cjp-2019-0494

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arXiv · 2003.04698

Mixed fluid cosmological model in $f(R,T)$ gravity

Parbati Sahoo·Barkha Taori·K. L. Mahanta

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Abstract

We construct Locally Rotationally Symmetric (LRS) Bianchi type-I cosmological model in $f(R,T)$ theory of gravity when the source of gravitation is the mixture of barotropic fluid and dark energy (DE) by employing a time varying deceleration parameter (DP). We observe through the behavior of the state finder parameters $(r, s)$ that our model begins from the Einstein static era and goes to $Λ$CDM era. The EoS parameter($ω_d$) for DE varies from phantom ($ω<-1$) phase to quintessence ($ω>-1$) phase which is consistent with the observational results. It is found that the discussed model can reproduce the current accelerating phase of expansion of the universe.

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Parbati Sahoo, Barkha Taori, K. L. Mahanta. 2020-02-28. Mixed fluid cosmological model in $f(R,T)$ gravity. https://doi.org/10.1139/cjp-2019-0494

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