Superfluid phases of 3He in a magnetic field

We derive from symmetry considerations the free energy as a function of the order parameter in a Ginzburg–Landau approximation. The minima of the free energy with respect to the order parameter are calculated by solving the gap equations in a magnetic field. Using the strong coupling corrections on...

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Bibliographic Details
Published in:Physica A 1999-04, Vol.265 (3), p.370-395, Article 370
Main Authors: Brussaard, P., Capel, H.W.
Format: Article
Language:English
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Summary:We derive from symmetry considerations the free energy as a function of the order parameter in a Ginzburg–Landau approximation. The minima of the free energy with respect to the order parameter are calculated by solving the gap equations in a magnetic field. Using the strong coupling corrections on the basis of a model of a Fermi gas with only short-range repulsions, it is shown that only the A1, ABM and extended BW states can lead to an absolute minimum.
ISSN:0378-4371
1873-2119
DOI:10.1016/S0378-4371(98)00557-3