A QCD-vacuum-based model of dynamical dark energy fits Planck+ACT+SPT, DESI DR2, and supernova data while reproducing the late-time evolution favored by DESI.
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High-redshift datasets constrain the local void gravitational redshift parameter z0 to be consistent with zero but allow the value needed for Hubble tension solution.
Stellar age analysis of a large Galactic sample gives a cosmic age of 13.73 Gyr, consistent with LambdaCDM but inconsistent with some Hubble tension resolutions implying 12.9 Gyr.
Swampland-motivated priors on the slope and field range of an exponential quintessence potential in a curved universe produce a mild shift in the best-fit value of spatial curvature Ω_k from Planck, DESI BAO, and supernova observations.
Bayesian joint constraints show that elevated star formation efficiency accounts for JWST high-z galaxy excess in flat Lambda CDM, without requiring deviations in dark energy equation of state or curvature.
A review summarizing advancements over the past two years that link DESI baryon acoustic oscillation data to string-inspired scenarios with dynamic dark energy.
Review of DESI evidence for dynamical dark energy, its dependence on parametrization and datasets, and alternative beyond-LambdaCDM interpretations that may address cosmological tensions.
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Constraints on the gravitational potential from DESI DR2 BAO and its implications for the local void scenario
High-redshift datasets constrain the local void gravitational redshift parameter z0 to be consistent with zero but allow the value needed for Hubble tension solution.