$\Lambda (t)$CDM Model: Cosmological Implications and Dynamical System Analysis

Himanshu Chaudhary, Ratul Mandal, Masroor Bashir +2

We investigated a time-varying cosmological constant model using recent BAO measurements from DESI DR2, combined with Type Ia supernova samples (Pantheon${}^{+}$, DES-Dovekie, and Un…