Quantitative determination of the critical points of Mott metal–insulator transition in strongly correlated systems
Yuekun Niu, Yu 煜 Ni 倪, Jianli Wang +4 more
Mottness is at the heart of the essential physics in a strongly correlated system as many novel quantum phenomena occur in the metallic phase near the Mott metal–insulator transition. We investigate the Mott transition in a Hubbard model by using the dynamical mean-field theory and introduce the local quantum state fidelity to depict the Mott metal–insulator transition. The local quantum state fidelity provides a convenient approach to determining the critical point of the Mott transition. Additionally, it presents a consistent description of the two distinct forms of the Mott transition points.
arXiv:2112.04661•Chinese Physics B•Oct 26, 2023•1 citation