Dynamical evolution and decay of multi-charged quantum vortex in a Bose–Einstein condensate

Abstract

Abstract We report the observation of the twisted decay of quadruply charged vortices taking place in an atomic Bose–Einstein condensate. Supporting numerical simulations show that the singly-charged vortices, which result from the decay of a multi-charged vortex, twist around intertwined in the shape of helical Kelvin waves.