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Pair-Breaking in Rotating Fermi Gases
M. Urban1, P. Schuck1, 2

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.
1 :  IPNO - Institut de Physique Nucléaire d'Orsay
2 :  LPMMC - Laboratoire de physique et modélisation des milieux condensés
Physique/Matière Condensée/Autre
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