Twisted vortex state
V.B. Eltsov, A.P. Finne, R. Hanninen, J. Kopu, M. Krusius, M. Tsubota,, E.V. Thuneberg
TL;DR
This paper investigates a twisted vortex state in superfluid helium, combining theoretical modeling, numerical simulations, and experimental evidence to understand the structure, relaxation, and formation of helically arranged vortices.
Contribution
It introduces a continuum theory for the twisted vortex state, supported by numerical calculations and experimental validation in superfluid 3He-B.
Findings
The twisted vortex state forms helices around the axis in a force-free configuration.
The structure and relaxation dynamics are described by the continuum theory.
Experimental evidence confirms the existence of the twisted vortex state in superfluid 3He-B.
Abstract
We study a twisted vortex bundle where quantized vortices form helices circling around the axis of the bundle in a "force-free" configuration. Such a state is created by injecting vortices into rotating vortex-free superfluid. Using continuum theory we determine the structure and the relaxation of the twisted state. This is confirmed by numerical calculations. We also present experimental evidence of the twisted vortex state in superfluid 3He-B.
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