Kavli Affiliate: Toshiya Namikawa | Summary:The recent measurement of baryonic acoustic oscillations by the Dark Energy Spectroscopic Instrument reveals a mild tension with observations of the cosmic microwave background (CMB) within the standard $Λ$CDM cosmological model. This discrepancy leads to a preference for a total neutrino mass that is lower than the minimum value inferred […]
Continue.. Resolving the negative effective neutrino mass parameter with cosmic birefringence