Josephson effects in one-dimensional supersolids

  title={Josephson effects in one-dimensional supersolids},
  author={Masaya Kunimi and Yasuki Nagai and Y. Kato},
  journal={Physical Review B},
We demonstrate that superflow past an obstacle is possible in a solid phase in the one-dimensional Gross-Pitaevskii equation with a finite-range two-body interaction. The phenomenon we find is analogous to the DC Josephson effect in superconductors and we deduce the "Josephson relation" between the current and phase difference of the condensates separated by the obstacle. We also discuss persistent current and nonclassical rotational inertia in annular container with a penetrable potential… Expand
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