2025/01/14 by John Dumancic, Richard Gass, Dumancic, John +5
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Cosmology and Gravitation Theories #Astronomy and Astrophysical Research
paper · pdf · doi:10.48550/arxiv.2501.08391
Local methods of direct determination of the Hubble constant and σ8 seem to conflict with the predictions made from the cosmic microwave background and ΛCDM. We propose a proof-of-concept model that models portions of the dark sector as several coupled axion-like fields, resulting in both early and late time departures from ΛCDM. We determine that the model successfully eliminates both the Hubble and σ8 tensions, while remaining consistent with both the DESI survey and the BAO sound horizon.