Dynamical local connector approximation for electron addition and removal spectra
Materials Science
2017-08-10 v2
Abstract
Realistic calculations of electron addition and removal spectra rely most often on Green's functions and complex, non-local self-energies. We introduce a shortcut to obtain the spectral function directly from a local and frequency-dependent, yet real, potential. We calculate this potential in the homogeneous electron gas (HEG), and we design a connector which prescribes the use of the HEG results to calculate spectral functions of real materials. Benchmark results for several solids demonstrate the potential of our approach.
Keywords
Cite
@article{arxiv.1708.02450,
title = {Dynamical local connector approximation for electron addition and removal spectra},
author = {Marco Vanzini and Lucia Reining and Matteo Gatti},
journal= {arXiv preprint arXiv:1708.02450},
year = {2017}
}
Comments
5 pages, 6 figures, 1 supplemental material