English

Density-matrix functionals for pairing in mesoscopic superconductors

Nuclear Theory 2015-05-18 v2 Superconductivity Nuclear Experiment

Abstract

A functional theory based on single-particle occupation numbers is developed for pairing. This functional, that generalizes the BCS approach, directly incorporates corrections due to particle number conservation. The functional is benchmarked with the pairing Hamiltonian and reproduces perfectly the energy for any particle number and coupling.

Keywords

Cite

@article{arxiv.1003.2860,
  title  = {Density-matrix functionals for pairing in mesoscopic superconductors},
  author = {Denis Lacroix and Guillaume Hupin},
  journal= {arXiv preprint arXiv:1003.2860},
  year   = {2015}
}

Comments

4 pages, 4 figures, revised version

R2 v1 2026-06-21T14:57:51.108Z