Vortex formation and quantum turbulence with rotating paddle potentials in a two-dimensional binary Bose-Einstein condensate
نویسندگان
چکیده
We conduct a theoretical study of the creation and dynamics vortices in two-dimensional binary Bose-Einstein condensate with mass imbalance between species. To initiate dynamics, we use one or two rotating paddle potentials species, while other species is influenced only via interspecies interaction. In both number dominant sign are determined by rotation frequency potential. Clusters positive negative form at low comparable to that trap when using single contrast, same tend dominate as increases, angular momentum reaches maximum value frequency, where velocity becomes equal sound condensate. When sufficiently high, rapid annihilation vortex-antivortex pairs significantly reduces antivortices system. For direction, vortex phenomenon similar paddle. However, rotated opposite signed occur all rotational frequencies. At frequencies, cluster like-signed produces $k^{-5/3}$ $k^{-3}$ power laws incompressible kinetic energy spectrum high wavenumbers, respectively, hallmark quantum turbulent flows.
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ژورنال
عنوان ژورنال: Physical review
سال: 2022
ISSN: ['0556-2813', '1538-4497', '1089-490X']
DOI: https://doi.org/10.1103/physreva.106.023306