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Status: Unchecked ×Keyword: dark matter ×Clear all

2 claims from 1 paper

1. Physics and Astronomy › Cosmology and Gravitation Theories

   Late-time emergence of dark energy and its interaction with dark matter

   Anonymous, Yang, Pan, Mena, Di Valentino and Chakraborty · Physical review. D/Physical review. D. · 2026

   The paper tests emergent dark energy models with an energy-exchange interaction against CMB, DESI DR2 and supernova data, and reports a preference for non-zero interaction but no overall model preference over standard ones.

   Unchecked2 claims
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   1. UncheckedBy best-fit chi-squared and Bayesian evidence, adding a dark energy–dark matter interaction does not make emergent dark energy models preferred over ΛCDM or w0waCDM.“However, according to the $Δχ^2_{\rm min}$ and Bayesian evidence, none of the interacting models is favored over $Λ$CDM or $w_0w_a$CDM, indicating that the interaction does not rescue these emergent DE models.”
   2. Unchecked“In contrast, the clustering parameter $S_8$ is consistently shifted toward lower values in the combined datasets, and it is correlated with the preference for a negative interaction.”