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Semiclassical Theory of Bardeen-Cooper-Schrieffer Pairing-Gap Fluctuations

Olofsson, Henrik ; Åberg, Sven LU and Leboeuf, Patricio (2008) In Physical Review Letters 100(3).
Abstract
uperfluidity 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 theoretical description of the zero temperature pairing fluctuations in the weak-coupling BCS limit of mesoscopic systems characterized by order or 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.
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author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
100
issue
3
article number
037005
publisher
American Physical Society
external identifiers
  • pmid:18233029
  • wos:000252698100084
  • scopus:38549144877
ISSN
1079-7114
DOI
10.1103/PhysRevLett.100.037005
language
English
LU publication?
yes
additional info
The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Mathematical Physics (Faculty of Technology) (011040002)
id
d64c4553-88e0-435f-8f56-99b92cbacc44 (old id 975800)
date added to LUP
2016-04-01 11:49:48
date last changed
2022-01-26 18:52:26
@article{d64c4553-88e0-435f-8f56-99b92cbacc44,
  abstract     = {{uperfluidity 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 theoretical description of the zero temperature pairing fluctuations in the weak-coupling BCS limit of mesoscopic systems characterized by order or 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.}},
  author       = {{Olofsson, Henrik and Åberg, Sven and Leboeuf, Patricio}},
  issn         = {{1079-7114}},
  language     = {{eng}},
  number       = {{3}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Letters}},
  title        = {{Semiclassical Theory of Bardeen-Cooper-Schrieffer Pairing-Gap Fluctuations}},
  url          = {{http://dx.doi.org/10.1103/PhysRevLett.100.037005}},
  doi          = {{10.1103/PhysRevLett.100.037005}},
  volume       = {{100}},
  year         = {{2008}},
}