Pair-Breaking in Rotating Fermi Gases

Abstract : 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.
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Preprints, Working Papers, ...
4 pages, 2 figures. 2008


http://hal.in2p3.fr/in2p3-00282307
Contributor : Suzanne Robert <>
Submitted on : Tuesday, May 27, 2008 - 10:00:57 AM
Last modification on : Tuesday, May 27, 2008 - 1:00:53 PM

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  • HAL Id : in2p3-00282307, version 1
  • ARXIV : 0804.0355

Citation

M. Urban, P. Schuck. Pair-Breaking in Rotating Fermi Gases. 4 pages, 2 figures. 2008. <in2p3-00282307>

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