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Elucidating cosmological model dependence with H0

2021/01/21 by Eoin Ó Colgáin, E. Ó Colgáin, M. M. Sheikh-Jabbari +2
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics #Cosmological constant #Cosmology #Cosmology and Gravitation Theories #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #Dark energy #FOS: Physical sciences #Friedmann–Lemaître–Robertson–Walker metric #Galaxies: Formation, Evolution, Phenomena #Gaussian #High Energy Physics - Theory (hep-th) #Hubble's law #Inflation (cosmology) #Lambda-CDM model #Misnomer #Philosophy #Physics #Quantum mechanics #Statistical physics #TRACE (psycholinguistics) #Theoretical physics #astro-ph.CO #hep-th

paper · pdf · doi:10.48550/arxiv.2101.08565

v3: 9 pages, 3 figures, Drastically reduced in size, arguments and statements sharpened, the main conclusions and results unchanged

openalex publication_date 2021/01/21 · arxiv created 2021/04/08 · arxiv updated 2021/04/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We observe that the errors on the Hubble constant H0, a universal parameter in any FLRW cosmology, can be larger in specific cosmological models than Gaussian Processes (GP) data reconstruction. We comment on the prior mean function and trace the smaller GP errors to stronger correlations, which we show precludes all well studied dynamical dark energy models. Our analysis suggests that "cosmological model independence", especially in the statement of Hubble tension, has become a misnomer.

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