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Pair-Breaking in Rotating Fermi Gases
Urban M., Schuck P.
http://hal.in2p3.fr/in2p3-00282307
Physique/Matière Condensée/Autre
Pair-Breaking in Rotating Fermi Gases
M. Urban1, P. Schuck1, 2
1 :  IPNO - Institut de Physique Nucléaire d'Orsay
http://ipnweb.in2p3.fr
CNRS : UMR8608 – IN2P3 – Université Paris XI - Paris Sud
IPN - 15, rue Georges Clemenceau - 91406 ORSAY CEDEX
France
2 :  LPMMC - Laboratoire de physique et modélisation des milieux condensés
http://lpmmc.grenoble.cnrs.fr/
CNRS : UMR5493 – Université Joseph Fourier - Grenoble I
Maison des Magistères/CNRS 25 Av des martyrs - BP 166 38042 GRENOBLE CEDEX 9
France
We study the pair-breaking effect of rotation on a cold Fermi gas in the BCS-BEC crossover region. In the framework of BCS theory, which is supposed to be qualitatively correct at zero temperature, we find that in a trap rotating around a symmetry axis, three regions have to be distinguished: (A) a region near the rotational axis where the superfluid stays at rest and where no pairs are broken, (B) a region where the pairs are progressively broken with increasing distance from the rotational axis, resulting in an increasing rotational current, and (C) a normal-fluid region where all pairs are broken and which rotates like a rigid body. Due to region B, density and current do not exhibit any discontinuities.

Pré-publications
2008

03.75.Kk,03.75.Ss,67.40.Bz
4 pages, 2 figures

Lien vers le texte intégral : 
http://fr.arXiv.org/abs/0804.0355