Khandker Quader (Kent State U.) e-DMFT based Correlation-Temperature Phase Diagram of Prototypical Rare-earth Nickelates Abstract: Materials whose properties are influenced by presence of f- of d-electrons are of current interest in condensed matter as they demonstrate a wide array of novel properties. Interest in the nickelates, RNiO2 (R=La, Nd, Pr) stem from the recent discovery of superconductivity upon doping these systems. Precision many-body methods such as dynamical mean-field theory (DMFT) can be used to study properties at finite temperatures, that can be compared with experiments. In this talk, after a brief discussion of the DMFT scheme, I will discuss, as an example, our recent self-consistent e-DMFT calculations* on the prototypical LaNiO2 compound. We propose a phase diagram based on our results for spin susceptibility, self-energy, scattering rate, spectral function, and magnetization for several values of the correlation U, and a wide range of temperature. The system exhibits a variety of phases in the U-T space, with several temperature scales: Fermi liquid (with screened d-moments) at low-T; Curie-Weiss (CW) with fluctuating d-moment at sufficiently high-T; possible deviation from CW at even higher-T; in-plane anti-ferromagnetism for sufficiently large U. We compare our results with experiments.