Dynamics of a parametrized dark energy model in $f(R,T)$ gravity

Abstract

We investigate a flat FLRW-model in $f(R,T)$-gravity, which includes the quadratic variation in scalar curvature $R$ and the linear term of the trace of the stress-energy tensor $T$. In turn, we establish the model has the behaviour of the late time Universe, which is accelerated expanding and ends up in a big rip. Using the parametrization of scale factor $a(t)$, we propose a model, which begins with point-type singularity, i.e., the model starts with a point of zero volume, infinite energy density and infinite temperature. The model's behaviour is accelerated expanding at present and $\Lambda$CDM in late times. Finally, the proposed model behaves like a quintessence dark energy model in the present time and is consistent with standard cosmology $\Lambda$CDM in late times.

15 pages, 20 figures

References in corpus (13)

• Dynamics of dark energy
• Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
• f(R,T) gravity
• Dark Energy and the Accelerating Universe
• Reconstructing Dark Energy
• Two new diagnostics of dark energy
• Approaches to Understanding Cosmic Acceleration
• Thermodynamic interpretation of the generalized gravity models with geometry - matter coupling
• Energy conditions in the epoch of galaxy formation
• A litmus test for Lambda
• Mapping the Cosmological Expansion
• Anisotropic cosmological models in $f(R,T)$ gravity with variable deceleration parameter
• Cosmology in scalar-tensor $f(R,T)$ gravity

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• A non-singular bouncing cosmology in $f(R,T)$ gravity
• A constrained cosmological model in $f(R,L_m)$ gravity
• Dynamical reconstruction of the $\Lambda$CDM model in scalar-tensor $f(R,T)$ gravity
• Collapsing scenarios of K-essence generalized Vaidya spacetime under $f(\bar{R},\bar{T})$ gravity
• Cosmological effects on $f(\bar{R},\bar{T})$ gravity through a non-standard theory