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Vortex-antivortex pair in a Bose-Einstein condensate

Type-II quantum lattice gas as a nonlinear φ4 theory of a complex field
  • J. Yepez
  • G. Vahala
  • L. Vahala
Article

Abstract

Presented is a type-II quantum algorithm for superfluid dynamics, used to numerically predict solutions of the GP equation for a complex scalar field (spinless bosons) in φ4 theory. The GP equation is a long wavelength effective field theory of a microscopic quantum lattice gas with nonlinear state reduction. The quantum lattice gas algorithm for modeling the dynamics of the one-body BEC state in 3+1 dimensions is presented. To demonstrate the method's strength as a computational physics tool, a difficult situation of filamentary singularities is simulated, the dynamics of solitary vortex-antivortex pairs, which are a basic building block of morphologies of quantum turbulence.

Keywords

Vortex European Physical Journal Special Topic Vortex Core Vortex Line Quantum Algorithm 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© EDP Sciences and Springer 2009

Authors and Affiliations

  • J. Yepez
    • 1
  • G. Vahala
    • 2
  • L. Vahala
    • 3
  1. 1.Air Force Research LaboratoryHanscomUSA
  2. 2.Department of PhysicsWilliamsburgUSA
  3. 3.Department of Electrical & Computer EngineeringOld Dominion UniversityNorfolkUSA

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