Oscillations and decay of superfluid currents in a one-dimensional Bose gas on a ring
arXiv:1903.09229 · doi:10.1103/PhysRevLett.123.195301
Abstract
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 that the dynamics are captured by a dual Josephson model and involve phase slips of thermal or quantum nature.
arXiv comment10 pages, 3 figures
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