0134280 - FZU-D 20030176 RIV GB eng J - Journal Article
Janiš, Václav
Two-particle renormalizations in many-fermion perturbation theory: the importance of the Ward identity.
Journal of Physics-Condensed Matter. Roč. 15, - (2003), s. L311-L317. ISSN 0953-8984. E-ISSN 1361-648X
R&D Projects: GA ČR GA202/01/0764
Institutional research plan: CEZ:AV0Z1010914
Keywords : Ward identity * electron correlations * conservation laws
Subject RIV: BE - Theoretical Physics
Impact factor: 1.757, year: 2003

A Ward identity between the one-electron self-energy and a two-particle irreducible vertex in interacting electron systems is derived.
Permanent Link: http://hdl.handle.net/11104/0032193