Vortex-antivortex pair in a Bose-Einstein condensate |
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Authors: | J. Yepez G. Vahala L. Vahala |
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Affiliation: | (1) Air Force Research Laboratory, Hanscom, Massachusetts 01731, USA;(2) Department of Physics, William & Mary, Williamsburg, Virginia 23185, USA;(3) Department of Electrical & Computer Engineering, Old Dominion University, Norfolk, Virginia 23529, USA |
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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. |
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