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Constraints on redshift-evolving Hubble constant models with early- and late-time diagnostics
We systematically investigate four cosmological models within a parameterized framework that allows for a redshift dependence of \(H_0\): three phenomenological models (\(αΛ\)CDM, \(αw\)CDM, and \(αw_0w_a\)CDM), and the $J$CDM model motivated by big bang quantum cosmology. Using cosmic microwave bac
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