Spin-up of a superfluid vortex lattice driven by rough boundaries

被引:3
作者
Keepfer, N. A. [1 ,2 ]
Stagg, G. W. [1 ]
Galantucci, L. [1 ]
Barenghi, C. F. [1 ]
Parker, N. G. [1 ]
机构
[1] Newcastle Univ, Joint Quantum Ctr JQC Durham Newcastle, Sch Math Stat & Phys, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England
[2] Univ Trento, INO CNR BEC Ctr, Dipartimento Fis, Via Sommar 14, I-38123 Trento, Italy
基金
英国工程与自然科学研究理事会;
关键词
SPATIAL-DISTRIBUTION; QUANTIZED VORTICES; HE-4; DYNAMICS; VISUALIZATION; NUCLEATION; MOTIONS; HELIUM;
D O I
10.1103/PhysRevB.102.144520
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We study numerically the formation of a vortex lattice inside a rotating bucket containing superfluid helium, paying attention to an important feature which is practically unavoidable in all experiments: the microscopic roughness of the bucket's surface. We model this using the Gross-Pitaevskii equation for a weakly interacting Bose gas, a model which is idealized when applied to superfluid helium but captures the key physics of the vortex dynamics which we are interested in. We find that the vortex lattice arises from the interaction and reconnections of nucleated U-shaped vortex lines, which merge and align along the axis of rotation. We quantify the effects which the surface roughness and remanent vortex lines play in this process.
引用
收藏
页数:11
相关论文
共 58 条
  • [1] Observation of vortex lattices in Bose-Einstein condensates
    Abo-Shaeer, JR
    Raman, C
    Vogels, JM
    Ketterle, W
    [J]. SCIENCE, 2001, 292 (5516) : 476 - 479
  • [2] Three-dimensional vortex configurations in a rotating Bose-Einstein condensate
    Aftalion, A
    Danaila, I
    [J]. PHYSICAL REVIEW A, 2003, 68 (02): : 6
  • [3] Annett J F., 2004, Superconductivity, Superfluids and Condensates
  • [4] Barenghi C. F., 2016, A Primer on Quantum Fluids
  • [5] Modeling quantum fluid dynamics at nonzero temperatures
    Berloff, Natalia G.
    Brachet, Marc
    Proukakis, Nick P.
    [J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2014, 111 : 4675 - 4682
  • [6] Roton creation and vortex nucleation in superfluids
    Berloff, NG
    Roberts, PH
    [J]. PHYSICS LETTERS A, 2000, 274 (1-2) : 69 - 74
  • [7] Superfluid helium - Visualization of quantized vortices
    Bewley, Gregory P.
    Lathrop, Daniel P.
    Sreenivasan, Katepalli R.
    [J]. NATURE, 2006, 441 (7093) : 588 - 588
  • [8] VORTEX PATTERNS AND ENERGIES IN A ROTATING SUPERFLUID
    CAMPBELL, LJ
    ZIFF, RM
    [J]. PHYSICAL REVIEW B, 1979, 20 (05): : 1886 - 1902
  • [9] Phenomenological damping in trapped atomic Bose-Einstein condensates
    Choi, S
    Morgan, SA
    Burnett, K
    [J]. PHYSICAL REVIEW A, 1998, 57 (05): : 4057 - 4060
  • [10] XMDS2: Fast, scalable simulation of coupled stochastic partial differential equations
    Dennis, Graham R.
    Hope, Joseph J.
    Johnsson, Mattias T.
    [J]. COMPUTER PHYSICS COMMUNICATIONS, 2013, 184 (01) : 201 - 208