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1,831 claims from 1,127 papers are on the record. 46 have been checked so far; the other 1,785 have no check with a result yet.

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Status: Unchecked ×Keyword: null energy condition violation ×Clear all

2 claims from 1 paper

1. Physics and Astronomy › Cosmology and Gravitation Theories

   Exotic Dark Matter and the DESI Anomaly

   Braglia, Chen and Abraham · arXiv (Cornell University) · 2025

   The paper tests exotic dark matter, whose pressure departs from zero at late times, as an alternative to dark energy models for explaining the DESI anomaly, and compares them with standard cosmology.

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   1. UncheckedSimple exotic dark matter models fit DESI and supernova data about as well as the w0wa dark energy model, with evidence against ΛCDM only with DES-Y5 or Union3.“In this work, by fitting to CMB, BAO, and Supernovae (SNe) data and comparing models in a Bayesian approach, we show that simple models of exotic dark matter are statistically comparable to the $w_0w_a$CDM DE model in explaining the recent anomaly in the late-time cosmological evolution suggested b…”
   2. Unchecked“The value of $H_0$ remains similar to that in the DE model, except in the no-SNe case, where the DE model predicts lower values than $Λ$CDM, thereby worsening the Hubble tension, whereas the EDM models yield values closer to that of $Λ$CDM, albeit with large…