Long-range order in the A-like phase of superfluid 3He in aerogel

Details Long-range order in the A-like phase of superfluid 3He in aerogel Long-range order in the A-like phase of superfluid 3He in aerogel

2007-07-28

arxiv.org/abs/0707.4222v2

Physics

Condensed Matter

Disordered Systems and Neural Networks

A contribution to QFS 2007 in Kazan, revised for publication in the Proceedings

Scientific paper

10.1007/s10909-007-9572-x

A mutual action of the random anisotropy brought in the superfluid 3He by aerogel and of the global anisotropy caused by its deformation is considered. Strong global anisotropy tends to suppress fluctuations of orientation of the order parameter and stabilizes ABM order parameter. In a limit of vanishing anisotropy these fluctuations are getting critical. It is argued that still in a region of small fluctuations the average order parameter can acquire "robust" component. This component maintains a long-range order even in a limit of vanishing global anisotropy.

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