Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Kadokura, Tsuyoshi"'
Autor:
Kadokura, Tsuyoshi, Saito, Hiroki
When a two-component mixture of immiscible fluids is stirred, the fluids are split into smaller domains with more vigorous stirring. We numerically investigate the sizes of such domains in a fully-developed turbulent state of a two-component superflu
Externí odkaz:
http://arxiv.org/abs/2101.01875
Autor:
Kadokura, Tsuyoshi, Saito, Hiroki
We investigate the dynamics of energy cascades in quantum turbulence by directly observing the vorticity distributions in numerical simulations of the Gross-Pitaevskii equation. By Fourier filtering each scale of the vorticity distribution, we find t
Externí odkaz:
http://arxiv.org/abs/1807.05332
Publikováno v:
Phys. Rev. A 90, 013612 (2014)
It is shown using numerical simulations that flow patterns around an obstacle potential moving in a superfluid exhibit hysteresis. In a certain velocity region, there is a bistability between stationary laminar flow and periodic vortex shedding. The
Externí odkaz:
http://arxiv.org/abs/1405.4577
Publikováno v:
Phys. Rev. B 87, 205312 (2013)
Steady states reached in a coherently pumped exciton-polariton superfluid are investigated. As the pump parameter is changed, the translational symmetry of the uniform system is spontaneously broken, and various steady patterns of quantized vortices
Externí odkaz:
http://arxiv.org/abs/1302.4846
Publikováno v:
Phys. Rev. Lett. 110, 026401 (2013)
The dynamics of an exciton-polariton superfluid resonantly pumped in a semiconductor microcavity are investigated by mean-field theory. Modulational instability develops into crystalline order and then ordered and disordered states alternately form.
Externí odkaz:
http://arxiv.org/abs/1208.4886
Publikováno v:
Phys. Rev. B 86, 014504 (2012)
The dynamics of an exciton--polariton superfluid resonantly injected into a semiconductor microcavity are investigated numerically. The results reveal that a B\'enard--von K\'arm\'an vortex street is generated in the wake behind an obstacle potential
Externí odkaz:
http://arxiv.org/abs/1205.1611
Publikováno v:
Phys. Rev. A 85, 023618 (2012)
The dynamics of a vortex dipole in a quasi-two dimensional two-component Bose-Einstein condensate are investigated. A vortex dipole is shown to penetrate the interface between the two components when the incident velocity is sufficiently large. A vor
Externí odkaz:
http://arxiv.org/abs/1112.4028
Publikováno v:
Phys. Rev. A 85, 013602 (2012)
The interfacial instability and subsequent dynamics in a phase-separated two-component Bose-Einstein condensate with rotation symmetry are studied. When the interatomic interaction or the trap frequency is changed, the Rayleigh-Taylor instability bre
Externí odkaz:
http://arxiv.org/abs/1111.1283
Publikováno v:
Phys. Rev. X 1, 021003 (2011)
We propose methods to generate and manipulate vortex dipoles in a Bose-Einstein condensate using Gaussian beams of red or blue-detuned laser. Velocity-controlled vortex dipoles are shown to be created and launched by a red-detuned beam and by two blu
Externí odkaz:
http://arxiv.org/abs/1106.1314
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