Improved null tests of $\Lambda$CDM and FLRW in light of DESI DR2

Bikash R. Dinda, Roy Maartens, Shun Saito +1

The DESI DR2 BAO data, in combination with CMB and different SNIa datasets, exclude the flat $\Lambda$CDM model at more than 2.5$\sigma$ when analyzed through the $w_0{w}_a$CDM parametrization…