Exact results for a Kondo impurity with electronic correlations

TL;DR

This paper presents an exact solution for a one-dimensional Kondo impurity model with arbitrary spin and electronic correlations, deriving Bethe ansatz equations and analyzing ground state and magnetic susceptibility.

Contribution

It provides the first exact solution for a correlated Kondo impurity model with arbitrary spin in one dimension, including Bethe ansatz equations and thermodynamic properties.

Findings

Exact Bethe ansatz equations derived for the model

Ground state properties analyzed in the thermodynamic limit

Zero-temperature magnetic susceptibility calculated

Abstract

An one dimensional model of a Kondo impurity with arbitrary spin in the presence of electronic correlations is solved exactly. The Bethe ansatz equations are obtained for the case of quadratic dispersion. The ground state is studied in the thermodynamic limit, and the magnetic susceptibility at zero temperature is calculated.