---
res:
  bibo_abstract:
  - 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.@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Arno
      foaf_name: Schindlmayr, Arno
      foaf_surname: Schindlmayr
      foaf_workInfoHomepage: http://www.librecat.org/personId=458
    orcid: 0000-0002-4855-071X
  bibo_doi: 10.1103/PhysRevB.56.3528
  bibo_issue: '7'
  bibo_volume: 56
  dct_date: 1997^xs_gYear
  dct_identifier:
  - UT:A1997XR96400004
  dct_isPartOf:
  - http://id.crossref.org/issn/0163-1829
  - http://id.crossref.org/issn/1095-3795
  dct_language: eng
  dct_publisher: American Physical Society@
  dct_title: Violation of particle number conservation in the GW approximation@
...