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astro-ph.CO2026
Thermodynamic reconstruction in observationally constrained dynamical dark energy models
Sonej Alam
We perform an observational and thermodynamic analysis of four cosmological models CDM, CPL, MPL, and the three-parameter MmAH parametrization. All dynamical models improve the…
astro-ph.CO2026
Gaussian process reconstruction of scalar field dynamics from recent cosmological data
Afaq Maqsood, Sonej Alam, Md. Wali Hossain
We reconstruct the late-time expansion history and dark energy dynamics using available cosmological data. We consider dark energy as an effective minimally coupled canonical scala…
astro-ph.CO2026
Dissipative Cosmology and the Nature of Dark Energy: Insights from Bulk Viscosity with DESI DR2 observations
Shahnawaz A. Adil, Sonej Alam, Somasri Sen +1
We explore a cosmological model in which dark energy is described by a bulk viscous fluid, providing a dissipative mechanism for late-time cosmic acceleration. Considering both min…