--- _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' ...