Zobrazeno 1 - 10
of 113
pro vyhledávání: '"Fetter, Alexander L."'
Publikováno v:
SciPost Phys. 17, 039 (2024)
Recent advances in cold-atom platforms have made real-time dynamics accessible, renewing interest in the motion of superfluid vortices in two-dimensional domains. Here we show that the energy and the trajectories of arbitrary vortex configurations ma
Externí odkaz:
http://arxiv.org/abs/2311.13545
Publikováno v:
Phys. Rev. A 106, 063307 (2022)
We study the motion of a superfluid vortex in condensates having different background density profiles, ranging from parabolic to uniform. The resulting effective point-vortex model for a generic power-law potential $\propto r^k$ can be experimentall
Externí odkaz:
http://arxiv.org/abs/2208.03172
Publikováno v:
Phys. Rev. A 105, 023307 (2022)
We study the dynamics of quantized superfluid vortices on axisymmetric compact surfaces with no holes, where the total vortex charge must vanish and the condition of irrotational flow forbids distributed vorticity. A conformal transformation from the
Externí odkaz:
http://arxiv.org/abs/2110.13560
Publikováno v:
Phys. Rev. A 105, 023307 (2022)
Motivated by ongoing experimental efforts to make closed Bose-Einstein condensate (BEC) shells in microgravity environments, this work studies the energy and dynamics of singly quantized vortices on a thin spherical superfluid shell, where the overal
Externí odkaz:
http://arxiv.org/abs/2101.06672
Publikováno v:
Phys. Rev. A 103, 023311 (2021)
We study the massive point-vortex model introduced in Ref. [Phys. Rev. A 101, 013630 (2020)], which describes two-dimensional point vortices of one species that have small cores of a different species. We derive the relevant Lagrangian itself, based
Externí odkaz:
http://arxiv.org/abs/2010.13765
Publikováno v:
Phys. Rev. A 101, 053606 (2020)
The superfluid flow velocity is proportional to the gradient of the phase of the superfluid order parameter, leading to the quantization of circulation around a vortex core. In this work, we study the dynamics of a superfluid film on the surface of a
Externí odkaz:
http://arxiv.org/abs/1911.11794
Akademický článek
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Publikováno v:
Phys. Rev. A 99, 063602 (2019)
We study the dynamics of vortices formed in a superfluid film adsorbed on the curved two-dimensional surface of a cone. To this aim, we observe that a cone can be unrolled to a sector on a plane with periodic boundary conditions on the straight sides
Externí odkaz:
http://arxiv.org/abs/1904.00465
Publikováno v:
Phys. Rev. A 96, 063608 (2017)
Superfluid vortex dynamics on an infinite cylinder differs significantly from that on a plane. The requirement that a condensate wave function be single valued upon once encircling the cylinder means that such a single vortex cannot remain stationary
Externí odkaz:
http://arxiv.org/abs/1708.08903