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- W4387560195 abstract "In this study, we analyze the dynamics of the interaction between dark matter and curvature-driven dark energy in viable $f(R)$ gravity models using the framework of dynamical system analysis. We incorporate this interaction by introducing a source term in their respective continuity equations, given by $Q = frac{kappa^2 alpha}{3H}tilde{rho}_{rm m}rho_{rm curv}$, and examine two $f(R)$ gravity models that comply with local gravity constraints and cosmological viability criteria. Our findings reveal subtle modifications to fixed points and their stability criteria when compared to the conventional dynamical analysis of $f(R)$ gravity models without matter-curvature interactions as proposed and examined in prior literature. We determine the parameter limits associated with the stability criteria of critical points of the dynamical system for both the models. Additionally, the introduction of interaction reveals variations in the dynamical aspects of cosmic evolution, contingent on the range of values for the relevant model parameters. These results are consistent with the observed features of cosmic evolution within specific limits of the $f(R)$ models parameters and the coupling parameter $alpha$. We also examine the evolutionary dynamics of the universe in the interacting scenario, in the context of cosmological and cosmographic parameters. Our analysis demonstrates that the interacting scenario comprehensively accounts for all the observed phases of the universe's evolution and also results in a stable late-time cosmic acceleration. Furthermore, we have examined the impact of the coupling parameter on the evolutionary dynamics, specifically in terms of its influence on the evolution of the matter-to-curvature energy density ratio." @default.
- W4387560195 created "2023-10-12" @default.
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- W4387560195 date "2023-10-09" @default.
- W4387560195 modified "2023-10-18" @default.
- W4387560195 title "Dynamics of viable $f(R)$ dark energy models in the presence of Curvature-Matter interactions" @default.
- W4387560195 doi "https://doi.org/10.48550/arxiv.2310.05578" @default.
- W4387560195 hasPublicationYear "2023" @default.
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