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

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 $\Lambda$CDM era. The EoS parameter(${\omega }_d$) for DE varies from phantom ($\omega <-1$) phase to quintessence ($\omega >-1$) 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.

9 pages, 7 figures, accepted version for publication in Canadian Journal of Physics

References in corpus (12)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
• f(R,T) gravity
• Cosmology and the Fate of Dilatation Symmetry
• Statefinder Diagnosis for Ricci Dark Energy
• Quintessence: a mini-review
• Wormholes in $R^2$-gravity within the $f(R,T)$ formalism
• The oscillating dark energy: future singularity and coincidence problem
• Bianchi Type III Anisotropic Dark Energy Models with Constant Deceleration Parameter
• Anisotropic cosmological models in $f(R,T)$ gravity with variable deceleration parameter
• Future Universe With w < -1 Without Big Smash
• Magnetized strange quark matter in $f(R,T)$ gravity with bilinear and special form of time varying deceleration parameter

Cited by in corpus (1)

• f(R,T) Gravity Model Behaving as a Dark Energy Source