Exact correlation functions of the BCS model in the canonical ensemble
Superconductivity
2016-08-31 v2 Astrophysics
Strongly Correlated Electrons
High Energy Physics - Theory
Mathematical Physics
math.MP
Exactly Solvable and Integrable Systems
Nuclear Theory
Abstract
We evaluate correlation functions of the BCS model for finite number of particles. The integrability of the Hamiltonian relates it with the Gaudin algebra . Therefore, a theorem that Sklyanin proved for the Gaudin model, can be applied. Several diagonal and off-diagonal correlators are calculated. The finite size scaling behavior of the pairing correlation function is studied.
Keywords
Cite
@article{arxiv.cond-mat/0105141,
title = {Exact correlation functions of the BCS model in the canonical ensemble},
author = {Luigi Amico and Andreas Osterloh},
journal= {arXiv preprint arXiv:cond-mat/0105141},
year = {2016}
}
Comments
4 pages revtex; 2 figures .eps. Revised version to be published in Phys. Rev. Lett