Semiclassical Theory of Bardeen-Cooper-Schrieffer Pairing-Gap Fluctuations
Superconductivity
2011-11-09 v3
Abstract
Superfluidity and superconductivity are genuine many-body manifestations of quantum coherence. For finite-size systems the associated pairing gap fluctuates as a function of size or shape. We provide a parameter free theoretical description of pairing fluctuations in mesoscopic systems characterized by order/chaos dynamics. The theory accurately describes experimental observations of nuclear superfluidity (regular system), predicts universal fluctuations of superconductivity in small chaotic metallic grains, and provides a global analysis in ultracold Fermi gases.
Keywords
Cite
@article{arxiv.0704.2310,
title = {Semiclassical Theory of Bardeen-Cooper-Schrieffer Pairing-Gap Fluctuations},
author = {H. Olofsson and S. Åberg and P. Leboeuf},
journal= {arXiv preprint arXiv:0704.2310},
year = {2011}
}
Comments
4 pages, 2 figures