One-Dimensional Quantum Transport Affected by a Background Medium: Fluctuations versus Correlations
Abstract
We analyze the spectral properties of a very general two-channel fermion-boson transport model in the insulating and metallic regimes, and the signatures of the metal-insulator quantum phase transition in between. To this end we determine the single particle spectral function related to angle-resolved photoemission spectroscopy, the momentum distribution function, the Drude weight and the optical response by means of a dynamical (pseudo-site) density-matrix renormalization group technique for the one-dimensional half-filled band case. We show how the interplay of correlations and fluctuations in the background medium controls the charge dynamics of the system, which is a fundamental problem in a great variety of advanced materials.
Cite
@article{arxiv.0909.0606,
title = {One-Dimensional Quantum Transport Affected by a Background Medium: Fluctuations versus Correlations},
author = {S. Ejima and H. Fehske},
journal= {arXiv preprint arXiv:0909.0606},
year = {2015}
}
Comments
6 pages, 5 figures, final version