Quasiparticle transport equation with collision delay. I. Phenomenological approach

TL;DR

This paper introduces a modified Boltzmann equation incorporating quasiparticle and virial corrections to better understand electron transport in impurity-scattered systems, highlighting their comparable effects on dielectric properties.

Contribution

It presents a phenomenological approach to include quasiparticle and virial corrections in the transport equation for electrons with resonant impurity scattering.

Findings

Virial and quasiparticle corrections have similar magnitudes.

Modified Boltzmann equation accounts for these corrections.

Impacts on dielectric function are discussed.

Abstract

For a system of non-interacting electrons scattered by resonant levels of neutral impurities, we show that virial and quasiparticle corrections have nearly equal magnitudes. We propose a modification of the Boltzmann equation that includes quasiparticle and virial corrections and discuss their interplay on a dielectric function.