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Abstract:
Using Ginzburg-Landau theory, we consider the effect of a magnetic field on the anisotropic
(3P2) neutron superfluid. In a strong magnetic field the pairing state has an
angle-dependent energy gap with a node along the field direction. Methods of homotopy theory are used
to determine the topologically stable line defects allowed by the 3P2 order parameters.
Our free-energy analysis of line vortices gives a qualitatively different structure to the single vortex,
outside of the core region, from that obtained by other authors.
Paper: [PDF]
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