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- W4229017549 abstract "In this letter, we investigate the cosmic expansion scenario of the universe in the framework of $f(R,L_m)$ gravity theory. We consider a non-linear $f(R,L_m)$ model, specifically, $f(R,L_m)=frac{R}{2}+L_m^n + beta$, where $n$ and $beta$ are free model parameters. Then we derive the motion equations for flat FLRW universe and obtain the exact solution of corresponding field equations. Then we estimate the best fit ranges of model parameters by using updated $H(z)$ datasets consisting of 57 points and the Pantheon datasets consisting of 1048 points. Further we investigate the physical behavior of density and the deceleration parameter. The evolution of deceleration parameter depicts a transition from deceleration to acceleration phases of the universe. Moreover, we analyze the stability of the solution of our cosmological model under the observational constraint by considering a linear perturbation. Lastlty, we investigate the behavior of Om diagnostic parameter and we observe that our model shows quintessence type behavior. We conclude that our $f(R,L_m)$ cosmological model agrees with the recent observational studies and can efficiently describe the late time cosmic acceleration." @default.
- W4229017549 created "2022-05-08" @default.
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- W4229017549 date "2022-08-01" @default.
- W4229017549 modified "2023-10-03" @default.
- W4229017549 title "Cosmology in f(R,L) gravity" @default.
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- W4229017549 doi "https://doi.org/10.1016/j.physletb.2022.137148" @default.
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