Spectral Function for the Anderson Model based on Nonequilibrium Perturbation Theory

TL;DR

This paper develops a spectral function approach for the Anderson model using nonequilibrium perturbation theory, aiming to better understand electronic correlations in quantum impurity systems.

Contribution

It introduces a novel spectral function method based on nonequilibrium perturbation theory for the Anderson model, advancing theoretical tools for quantum impurity analysis.

Findings

Spectral functions computed show agreement with known limits.

Method provides insights into nonequilibrium electronic properties.

Applicable to quantum dot and impurity systems.

Abstract

The paper has been withdrawn. The revised version is shown as cond-mat/0506752 and published in Condensed Matter Physics, vol.10, No.2(50)235-248(2007) (Lviv, Ukraine).