Dynamical Dark Energy and the Unresolved Hubble Tension: Multi-model Constraints from DESI 2025 and Other Probes
Zhuoming Zhang; Tengpeng Xu; Yun Chen · 2026 · The Astrophysical Journal
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Abstract
Abstract We present a Bayesian comparative analysis of five cosmological models: ΛCDM, w CDM, w 0 w a CDM, ϕ CDM (with scalar-field dark energy), and an interacting dark energy scenario (the ξ -index model), to investigate dark energy evolution and the Hubble tension. Utilizing the latest data from the second data release of the Dark Energy Spectroscopic Instrument (Baryon Acoustic Oscillations, BAO), Pantheon+ (type Ia supernovae, SNIa), and cosmic microwave background (CMB) data (including lensing) from Planck and the Atacama Cosmology Telescope, we report three key findings. First, the Hubb
Abstract by Zhuoming Zhang; Tengpeng Xu; Yun Chen, The Astrophysical Journal (2026) — licensed CC BY 4.0.
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Metadata source: OpenAlex · DOI 10.3847/1538-4357/ae4738