{"ddc":["530"],"user_id":"458","extern":"1","abstract":[{"text":"We present a nontrivial model system of interacting electrons that can be solved analytically in the GW approximation. We obtain the particle number from the GW Green’s function strictly analytically, and prove that there is a genuine violation of particle number conservation if the self-energy is calculated non-self-consistently from a zeroth order Green’s function, as done in virtually all practical implementations. We also show that a simple shift of the self-energy that partially restores self-consistency reduces the numerical deviation significantly.","lang":"eng"}],"article_type":"original","volume":56,"date_created":"2020-08-28T22:07:22Z","status":"public","has_accepted_license":"1","publication":"Physical Review B","file_date_updated":"2020-08-30T16:26:32Z","quality_controlled":"1","publisher":"American Physical Society","author":[{"last_name":"Schindlmayr","id":"458","first_name":"Arno","orcid":"0000-0002-4855-071X","full_name":"Schindlmayr, Arno"}],"file":[{"file_id":"18629","creator":"schindlm","date_updated":"2020-08-30T16:26:32Z","content_type":"application/pdf","description":"© 1997 American Physical Society","relation":"main_file","file_size":93337,"title":"Violation of particle number conservation in the GW approximation","date_created":"2020-08-28T22:08:35Z","file_name":"PhysRevB.56.3528.pdf","access_level":"open_access"}],"issue":"7","_id":"18628","intvolume":" 56","page":"3528-3531","type":"journal_article","year":"1997","citation":{"mla":"Schindlmayr, Arno. “Violation of Particle Number Conservation in the GW Approximation.” Physical Review B, vol. 56, no. 7, American Physical Society, 1997, pp. 3528–31, doi:10.1103/PhysRevB.56.3528.","bibtex":"@article{Schindlmayr_1997, title={Violation of particle number conservation in the GW approximation}, volume={56}, DOI={10.1103/PhysRevB.56.3528}, number={7}, journal={Physical Review B}, publisher={American Physical Society}, author={Schindlmayr, Arno}, year={1997}, pages={3528–3531} }","apa":"Schindlmayr, A. (1997). Violation of particle number conservation in the GW approximation. Physical Review B, 56(7), 3528–3531. https://doi.org/10.1103/PhysRevB.56.3528","ama":"Schindlmayr A. Violation of particle number conservation in the GW approximation. Physical Review B. 1997;56(7):3528-3531. doi:10.1103/PhysRevB.56.3528","chicago":"Schindlmayr, Arno. “Violation of Particle Number Conservation in the GW Approximation.” Physical Review B 56, no. 7 (1997): 3528–31. https://doi.org/10.1103/PhysRevB.56.3528.","ieee":"A. Schindlmayr, “Violation of particle number conservation in the GW approximation,” Physical Review B, vol. 56, no. 7, pp. 3528–3531, 1997, doi: 10.1103/PhysRevB.56.3528.","short":"A. Schindlmayr, Physical Review B 56 (1997) 3528–3531."},"title":"Violation of particle number conservation in the GW approximation","external_id":{"arxiv":["cond-mat/9709275"],"isi":["A1997XR96400004"]},"publication_status":"published","publication_identifier":{"issn":["0163-1829"],"eissn":["1095-3795"]},"isi":"1","doi":"10.1103/PhysRevB.56.3528","oa":"1","date_updated":"2022-11-11T07:00:49Z","language":[{"iso":"eng"}]}