Year: 2002
Type: article
Abstract: This paper revisits Ward identities for disordered interacting normal metals and superconductors. It offers a simple derivation based on gauge invariance and recasts the identities in a form that allows easy analysis of the quasiparticle charge conservation (as, e.g., in a normal metal) or nonconservation (as, e.g., in a d-wave superconductor).
Author: Revaz Ramazashvili
Institution: Argonne National Laboratory
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2047106961