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Order parameter of A-like phase of $^3$He in aerogel

I. A. Fomin
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Abstract

Phenomenological criterion of a choice of the order parameter for superfluid phases of $^3$He in aerogel in a near vicinity of the transition temperature is formulated. Except for the B-phase this criterion is met by the order parameter of axiplanar phase for a special choice of its parameters. It is proposed as a limiting at $T\to T_c$ form of the order parameter for the observed A-like phase.

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I. A. Fomin. 2003-02-06. Order parameter of A-like phase of $^3$He in aerogel. https://doi.org/10.1134/1.1574839

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