Off-shell selfenergy for 1-D Fermi liquids
Strongly Correlated Electrons
2025-02-18 v2 Materials Science
Abstract
The selfenergy in Born approximation including exchange of interacting one-dimensional systems is expressed in terms of a single integral about the potential which allows a fast and precise calculation for any potential analytically. The imaginary part of the self energy as damping of single-particle excitations shows a rich structure of different areas limited by single-particle and collective excitation lines. The corresponding spectral function reveals a pseudogap, a splitting of excitation into holons and antiholons as well as bound states.
Cite
@article{arxiv.2309.11428,
title = {Off-shell selfenergy for 1-D Fermi liquids},
author = {Klaus Morawetz and Vinod Ashokan and Kare Narain Pathak and Neil Drummond},
journal= {arXiv preprint arXiv:2309.11428},
year = {2025}
}