Quantum vortex
= Quantum vortex
{wiki}
= Quantized vortex
{synonym}
A <quantum vortex> has integer <winding number> of a condensate's <complex argument>. For atomic mass $m$, its <superfluid velocity> gives <circulation> $2\pi\hbar q/m$ for integer $q$. A straight vortex has a density-depleted core and, outside it, tangential <velocity> $q\hbar/(mr)$. Its long-range flow <energy> is proportional to $q^2\log(R/a)$, while its <angular momentum> has the sign of $q$.