Revisiting CPL with sign-switching density: To cross or not to cross the NECB

Mine Gökçen, Özgür Akarsu, Eleonora Di Valentino

Recent DESI DR2 BAO measurements, when combined with CMB and SNeIa data, exhibit a $3.2\sigma$-$3.4\sigma$ preference for dynamical dark energy (DE) described by the CPL-parametrized equatio…