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- W2010400698 abstract "Motivated by a recent experiment [Beattie, Moulder, Fletcher, and Hadzibabic, Phys. Rev. Lett. 110, 025301 (2013)], we study the superflow of atomic spinor Bose-Einstein condensates optically trapped in a ring-shaped geometry. Within a dissipative mean-field approach we simulate a two-component condensate in conditions adapted to the experiment. In qualitative agreement with the experimental findings, we observe stable superflow if the spin-population imbalance is above some well-defined threshold value. Below the stability threshold the persistent currents with higher-order circulation decay in quantized steps, and the vortex lines escape from the center of the ring through dynamically created ``weak links'' in the condensate annulus. These regions with reduced density of one spin component are filled by atoms of the other component. The vortices then leave the ring-shaped high-density region of the condensate and finally decay into elementary excitations." @default.
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- W2010400698 date "2013-11-27" @default.
- W2010400698 modified "2023-10-10" @default.
- W2010400698 title "Stability of persistent currents in spinor Bose-Einstein condensates" @default.
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- W2010400698 doi "https://doi.org/10.1103/physreva.88.051602" @default.
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