Abstract:
Landau's and Lifshitz's 1955 paper on vortex sheets in a rotating superfluid came out almost simultaneously with Feynman's paper on quantized vortices in superfluid 4He and was long considered incorrect. Forty years later, in what was a triumph for the authors' theory, experiments at the Olli Lounasmaa Low Temperature Laboratory (Otaniemi, Finland) detected vortex sheets in chiral superfluid 3He-A in a rotating cryostat, validating Landau's and Lifshitz's equation relating the vortex sheet separation and the angular velocity of rotation. This paper discusses vortex sheet configurations that have been or can be observed in superfluid 3He.
This work was supported in part by the Academy of Finland (project No. 250280) and by the facilities of the Cryohall
infrastructure of Aalto University.
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