Negative neutrino masses as a mirage of dark energy

作者：W. Elbers, C. Frenk, A. Jenkins, Baojiu Li, S. Pascoli · 发表于：Physical Review D · 年份：2024 · DOI：10.1103/physrevd.111.063534 · 被引用次数：55 · 研究领域：Physics

The latest cosmological constraints on the sum of the neutrino masses depend on prior physical assumptions about the mass spectrum. To test the accordance of cosmological and laboratory constraints in the absence of such priors, we introduce an effective neutrino mass parameter that extends consistently to negative values. For the ΛCDM model, we analyze data from , the Atacama Cosmology Telescope, and the Dark Energy Spectroscopic Instrument and find a 2.8–3.3σ tension with the constraints from oscillation experiments. Motivated by recent hints of evolving dark energy, we analyze the w0wa and mirage dark energy models, finding that they favor larger masses consistent with laboratory data, respectively, ∑mν,eff=0.06−0.10+0.15  eV and ∑mν,eff=0.04−0.11+0.15  eV (both at 68%). Published by the American Physical Society 2025