Vortex reconnections in superfluid helium follow a universal square-root-in-time scaling at all temperatures, with a temperature-dependent approach rate but a temperature-independent separation rate, and each event injects a sudden energy burst into the normal fluid.
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Experimental and theoretical evidence of universality in superfluid vortex reconnections
Vortex reconnections in superfluid helium follow a universal square-root-in-time scaling at all temperatures, with a temperature-dependent approach rate but a temperature-independent separation rate, and each event injects a sudden energy burst into the normal fluid.