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Robust superfluid phases of 3He in aerogel

I. A. Fomin
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Abstract

Within a phenomenological approach possible forms of the order parameter of the superfluid phases of 3He in a vicinity of the transition temperature are discussed. Effect of aerogel is described by a random tensor field interacting with the orbital part of the order parameter. With respect to their interaction with the random tensor field a group of "robust" order parameters which can maintain long-range order in a presence of the random field is specified. Robust order parameters, corresponding to Equal Spin Pairing (ESP) states are found and proposed as candidates for the observed A-like superfluid phase of liquid 3He in aerogel.

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I. A. Fomin. 2003-07-24. Robust superfluid phases of 3He in aerogel. https://doi.org/10.1023/b%3Ajolt.0000012642.74907.bc

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