Vortex excitation in superfluid 4He: A Diffusion Monte Carlo study

Details Vortex excitation in superfluid 4He: A Diffusion Monte Carlo study Vortex excitation in superfluid 4He: A Diffusion Monte Carlo study

1996-06-14

arxiv.org/abs/cond-mat/9606110v1

Physics

Condensed Matter

11 pages, 3 postscript figures, Revtex

Scientific paper

10.1103/PhysRevLett.77.2754

We present a diffusion Monte Carlo study of a single vortex in
two-dimensional superfluid liquid $^4$He within the fixed node approximation.
We use both the Feynman phase and an improved phase which includes backflow
correlations to model the nodal surface of the vortex wavefunction. Results for
the particle density, core radius and excitation energies are presented.

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