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Status: Unchecked ×Keyword: cosmological reconstruction ×Clear all

2 claims from 1 paper

1. Physics and Astronomy › Cosmology and Gravitation Theories

   Omnipotent dark energy: A phenomenological answer to the Hubble tension

   Adil, Akarsu, Di Valentino et al. · Physical review. D/Physical review. D. · 2024

   The paper introduces 'omnipotent' dark energy models and tests one example, DMS20, against updated datasets, finding it eases the Hubble tension with a preference for dark energy density crossing to negative values.

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   1. UncheckedIn the DMS20 dark energy model, negative dark energy density, together with phantom divide crossing, plays a key role in easing cosmological tensions.“Additionally, we uncover that its negative DE density feature, importance of which was not previously investigated, plays a crucial role in alleviating the tensions, along with the PDL crossing feature that the parametrization presupposes.”
   2. UncheckedWith the full dataset, the dark energy model gives H0 = 70.05 ± 0.64, easing the Hubble tension and favouring a crossing to negative dark energy density.“For our full dataset, the model yields ${H}_{0}=70.05\ifmmode\pm\else\textpm\fi{}0.64$ (68% CL) relaxing the ${H}_{0}$ tension with a preference of crossing to negative DE densities (${a}_{\mathrm{p}}>0$ at 99% CL), along with the constraint ${a}_{m}=0.92{2}_{\ensuremath{-}0.035}^{+0.041}$ on the s…”