Magnus force in discrete and continuous two-dimensional superfluids
Journal Article
·
· Physical Review. B, Condensed Matter and Materials Physics
- Department of Physics, Purdue University, West Lafayette, Indiana 47907 (United States)
Motion of vortices in two-dimensional superfluids in the classical limit is studied by solving the Gross-Pitaevskii equation numerically on a uniform lattice. We find that, in the presence of a superflow directed along one of the main lattice periods, vortices move with the superflow on fine lattices but perpendicular to it on coarse ones. We interpret this result as a transition from the full Magnus force in a Galilean-invariant limit to vanishing effective Magnus force in a discrete system, in agreement with the existing experiments on vortex motion in Josephson junction arrays.
- OSTI ID:
- 20719301
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 72, Issue 5; Other Information: DOI: 10.1103/PhysRevB.72.054525; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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