Spin and charge dynamics of the one-dimensional extended Hubbard model

TL;DR

This paper uses advanced numerical methods to analyze the spin and charge dynamics in a one-dimensional extended Hubbard model, providing detailed insights and matching experimental results for various spectroscopic techniques.

Contribution

It presents a comprehensive numerical study of dynamical correlation functions in the extended Hubbard model, connecting theoretical predictions with experimental observations.

Findings

Quantitative agreement with experimental spectroscopic data

Detailed analysis of dynamical spin and charge structure factors

Insights into the Mott-insulating regime of the model

Abstract

We investigate the dynamical spin and charge structure factors and the one-particle spectral function of the one-dimensional extended Hubbard model at half band-filling using the dynamical density-matrix renormalization group method. The influence of the model parameters on these frequency- and momentum-resolved dynamical correlation functions is discussed in detail for the Mott-insulating regime. We find quantitative agreement between our numerical results and experiments for the optical conductivity, resonant inelastic X-ray scattering, neutron scattering, and angle-resolved photoemission spectroscopy in the quasi-one-dimensional Mott insulator SrCuO$_2$.