Probing Departures from ΛCDM by Late-time Datasets
Himanshu Chaudhary; Vipin Kumar Sharma; Salvatore Capozzıello; G. Mustafa · 2026 · The Astrophysical Journal Supplement Series
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Abstract
Abstract Observational data play a pivotal role in identifying cosmological models that are both theoretically consistent and empirically viable. In this work, we investigate the level of preference for dynamical dark energy over a cosmological constant using current late-time observational datasets, including cosmic chronometers (CC), baryon acoustic oscillations from Dark Energy Spectroscopic Instrument (DESI) DR2, and different Type Ia supernova catalogs (Pantheon + , DES-Dovekie, Union3). We analyze various dynamical dark-energy models, including ω CDM, o ω CDM, ω 0 ω a CDM, logarithmic, e
Abstract by Himanshu Chaudhary; Vipin Kumar Sharma; Salvatore Capozzıello; G. Mustafa, The Astrophysical Journal Supplement Series (2026) — licensed CC BY 4.0.
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Metadata source: OpenAlex · DOI 10.3847/1538-4365/ae4b3f