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Author Vitiello, S. A. ♦ Reatto, L. ♦ Chester, G. V. ♦ Kalos, M. H.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ HELIUM II ♦ VORTEX FLOW ♦ PHASE TRANSFORMATIONS ♦ QUANTUM FLUIDS ♦ MONTE CARLO METHOD ♦ MELTING
Abstract We present a Monte Carlo investigation of a vortex line in superfluid {sup 4}He in a cylindrical container. We compute the excitation energy and the density profile for two different trial functions. The first is the standard Onsager-Feynman form for an excited vortex state. This gives a singular velocity on the axis of the vortex and a hollow core. In our second approach, a shadow wave function, is used to model the vortex state through the auxiliary, or shadow variables. As a consequence, the vorticity is distributed over a finite region and the density does not vanish at the vortex axis. This second wave function gives a substantially lower energy than the wave function of the Onsager-Feynman form. {copyright} {ital 1996 The American Physical Society.}
ISSN 01631829
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-07-01
Publisher Place United States
Journal Physical Review, B: Condensed Matter
Volume Number 54
Issue Number 2


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