Andrei T. Patrascu

Mutual-friction self-focusing of a Hasimoto soliton and its torsion-driven arrest: a conserved amplitude–torsion pairing on a superfluid vortex filament

Abstract A quantized vortex in superfluid helium-4 moves under its self-induced velocity and, at finite temperature, under mutual friction with the normal fluid. In the local-induction approximation the frictionless filament is integrable and its localized excitation is the Hasim...