322 citations · 6.2k across the 151 of their papers we have counts for
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Nonlinear dynamics for vortex lattice formation in a rotating Bose-Einstein condensate
Kenichi Kasamatsu, Makoto Tsubota, Masahito Ueda
We study the response of a trapped Bose-Einstein condensate to a sudden turn-on of a rotating drive by solving the two-dimensional Gross-Pitaevskii equation. A weakly anisotropic r…
Diffusion of an Inhomogeneous Vortex Tangle
Makoto Tsubota, Tsunehiko Araki, W. F. Vinen
The spatial diffusion of an inhomogeneous vortex tangle is studied numerically with the vortex filament model. A localized initial tangle is prepared by applying a counterflow, and…
Competition between rotation and turbulence in superfluid He
Tsunehiko Araki, Makoto Tsubota, Carlo F. Barenghi
Two types of vortex states have been much studied in superfluid He. The first is the vortex array in a rotating container. The second is the vortex tangle in turbulent flow. An…
Bose-Einstein condensation and superfluidity of dilute Bose gas in a random potential
Michikazu Kobayashi, Makoto Tsubota
We develop the dilute Bose gas model with random potential in order to understand the Bose system in random media such as 4He in porous glass. Using the random potential taking acc…
Giant hole and circular superflow in a fast rotating Bose-Einstein condensate
Kenichi Kasamatsu, Makoto Tsubota, Masahito Ueda
A fast rotating Bose-Einstein condensate confined in a quadratic-plus-quartic potential is found to dynamically generate a "giant vortex" that absorbs all phase singularities into…
Energy Spectrum of Superfluid Turbulence without Normal Fluid
Tsunehiko Araki, Makoto Tsubota, Sergey K. Nemirovskii
The energy spectrum of the superfluid turbulence without the normal fluid is studied numerically under the vortex filament model. Time evolution of the Taylor-Green vortex is calcu…