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oaioai:HAL:hal-00222125v1

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

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Publication date
1 January 2008
Publisher
'American Physical Society (APS)'

Abstract

4 pages, 2 figuresInternational audienceSuperfluidity 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

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Hal-Diderot

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Last time updated on 14/04/2021

This paper was published in Hal-Diderot.

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