Single-Particle Dynamics in the Vicinity of the Mott-Hubbard Metal-to-Insulator Transition

TL;DR

This paper investigates the single-particle behavior near the Mott-Hubbard transition using advanced theoretical methods to produce spectra that can be directly compared with experimental photoelectron data.

Contribution

It introduces high-resolution spectral calculations for the Hubbard model near the transition, enhancing understanding of electron dynamics in strongly correlated systems.

Findings

Spectral features consistent with Mott-Hubbard transition

Momentum-resolved spectra matching experimental observations

Insights into electron localization mechanisms

Abstract

The single-particle dynamics close to a metal-to-insulator transition induced by strong repulsive interaction between the electrons is investigated. The system is described by a half-filled Hubbard model which is treated by dynamic mean-field theory evaluated by high-resolution dynamic density-matrix renormalization. We provide theoretical spectra with momentum resolution which facilitate the comparison to photoelectron spectroscopy.