Oscillations and Decay of Superfluid Currents in a One-Dimensional Bose Gas on a Ring
Oscillations and Decay of Superfluid Currents in a One-Dimensional Bose Gas on a Ring
We study the time evolution of a supercurrent imprinted on a one-dimensional ring of interacting bosons in the presence of a defect created by a localized barrier. Depending on interaction strength and temperature, we identify various dynamical regimes where the current oscillates, is self-trapped or decays with time. We show …