Abstract
The helicity conservation theorem is demonstrated in the case of superfluid4He. As in the case of a classical barotropic fluid, the helicity integral expresses some topological properties of vortex lines.
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Peradzynski, Z. Helicity theorem and vortex lines in superfluid4He. Int J Theor Phys 29, 1277–1284 (1990). https://doi.org/10.1007/BF00672937
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DOI: https://doi.org/10.1007/BF00672937