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

Abstract

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.

11 pages, 3 postscript figures, Revtex

References in corpus (1)

• Unbiased estimators in Quantum Monte Carlo methods: application to liquid ${}^4$He

Cited by in corpus (16)

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