Constraints on the Sum of Neutrino Masses from ACT DR6 and DESI DR2 Considering Isocurvature Initial Conditions

Hongsheng Hou, Sai Wang, Zhi-Chao Zhao +1

We present a robust assessment of cosmological constraints on the sum of neutrino masses ($\sum m_{\nu }$) when relaxing the standard assumption of purely adiabatic primordial initial c…