---
_id: '18620'
abstract:
- lang: eng
text: With the aim of identifying universal trends, we compare fully self-consistent
electronic spectra and total energies obtained from the GW approximation with
those from an extended GWΓ scheme that includes a nontrivial vertex function and
the fundamentally distinct Bethe-Goldstone approach based on the T matrix. The
self-consistent Green’s function G, as derived from Dyson’s equation, is used
not only in the self-energy but also to construct the screened interaction W for
a model system. For all approximations we observe a similar deterioration of the
spectrum, which is not removed by vertex corrections. In particular, satellite
peaks are systematically broadened and move closer to the chemical potential.
The corresponding total energies are universally raised, independent of the system
parameters. Our results, therefore, suggest that any improvement in total energy
due to self-consistency, such as for the electron gas in the GW approximation,
may be fortuitous.
article_type: original
author:
- first_name: Arno
full_name: Schindlmayr, Arno
id: '458'
last_name: Schindlmayr
orcid: 0000-0002-4855-071X
- first_name: Thomas Joachim
full_name: Pollehn, Thomas Joachim
last_name: Pollehn
- first_name: Rex William
full_name: Godby, Rex William
last_name: Godby
citation:
ama: Schindlmayr A, Pollehn TJ, Godby RW. Spectra and total energies from self-consistent
many-body perturbation theory. Physical Review B. 1998;58(19):12684-12690.
doi:10.1103/PhysRevB.58.12684
apa: Schindlmayr, A., Pollehn, T. J., & Godby, R. W. (1998). Spectra and total
energies from self-consistent many-body perturbation theory. Physical Review
B, 58(19), 12684–12690. https://doi.org/10.1103/PhysRevB.58.12684
bibtex: '@article{Schindlmayr_Pollehn_Godby_1998, title={Spectra and total energies
from self-consistent many-body perturbation theory}, volume={58}, DOI={10.1103/PhysRevB.58.12684},
number={19}, journal={Physical Review B}, publisher={American Physical Society},
author={Schindlmayr, Arno and Pollehn, Thomas Joachim and Godby, Rex William},
year={1998}, pages={12684–12690} }'
chicago: 'Schindlmayr, Arno, Thomas Joachim Pollehn, and Rex William Godby. “Spectra
and Total Energies from Self-Consistent Many-Body Perturbation Theory.” Physical
Review B 58, no. 19 (1998): 12684–90. https://doi.org/10.1103/PhysRevB.58.12684.'
ieee: 'A. Schindlmayr, T. J. Pollehn, and R. W. Godby, “Spectra and total energies
from self-consistent many-body perturbation theory,” Physical Review B,
vol. 58, no. 19, pp. 12684–12690, 1998, doi: 10.1103/PhysRevB.58.12684.'
mla: Schindlmayr, Arno, et al. “Spectra and Total Energies from Self-Consistent
Many-Body Perturbation Theory.” Physical Review B, vol. 58, no. 19, American
Physical Society, 1998, pp. 12684–90, doi:10.1103/PhysRevB.58.12684.
short: A. Schindlmayr, T.J. Pollehn, R.W. Godby, Physical Review B 58 (1998) 12684–12690.
date_created: 2020-08-28T21:52:29Z
date_updated: 2022-11-11T06:57:30Z
ddc:
- '530'
doi: 10.1103/PhysRevB.58.12684
extern: '1'
external_id:
arxiv:
- cond-mat/9806121
isi:
- '000077295500041'
file:
- access_level: open_access
content_type: application/pdf
creator: schindlm
date_created: 2020-08-28T21:53:40Z
date_updated: 2020-08-30T16:21:26Z
description: © 1998 American Physical Society
file_id: '18621'
file_name: PhysRevB.58.12684.pdf
file_size: 151644
relation: main_file
title: Spectra and total energies from self-consistent many-body perturbation theory
file_date_updated: 2020-08-30T16:21:26Z
has_accepted_license: '1'
intvolume: ' 58'
isi: '1'
issue: '19'
language:
- iso: eng
oa: '1'
page: 12684-12690
publication: Physical Review B
publication_identifier:
eissn:
- 1095-3795
issn:
- 0163-1829
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
status: public
title: Spectra and total energies from self-consistent many-body perturbation theory
type: journal_article
user_id: '458'
volume: 58
year: '1998'
...