Abstract
This study investigates the cosmological effects of different dark energy models within a fractal universe framework, including a non-nonlinear coupling between dark components. We examine well-known dark energy models, including generalized ghost and power-law entropy corrected, using the Hubble horizon as the infrared boundary. Well-known cosmological parameters are also analyzed to explain the current scenario of the universe. Hence, to find the universe’s expansion rate, we evaluate the Hubble parameter (H), the deceleration parameter (q) to investigate its acceleration or deceleration, the equation of state parameter ωΛ to check the nature of dark energy and Vs2 to study the stability of cosmic evolution. The behavior of ωΛ−ωΛ′ plane is also investigate as it is a valuable tool in cosmology for tracking the evolutionary behavior of dark energy and understanding its dynamic properties over time. Our analysis reveals that the Hubble parameter ranges from 74.5−1.5+1.5 and the generalized ghost dark energy model to 77−3+3 for the power-law entropy corrected model. Both models demonstrate the phase transition of the universe from deceleration to acceleration phase and ωΛ→−1, indicating a cosmological constant-like behavior. Stability of the models is assessed using the squared speed of sound parameter, confirming stability across all cases. Furthermore, the results for the ωΛ−ωΛ′ plane are consistent with Planck 2018 for both models.
Published Version
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