Non analytic Vortex Core and Nonlinear Vortex Flow in Bosonic Superuids

Vortices in bosonic superfluids with large healing length undergo a non analytic core reconstruction which results in a set of low energy excited states with long lifetime In this talk I wil analyze the disordered limited motion of such vortices and show that vortex heating results in strong nonlinear effects of the transport at velocities much smaller than Landau s critical velocity Experiments will be suggested to verify the predictions