Density functional study of two-dimensional He4 clusters

Abstract

Binding energies and density profiles of two-dimensional systems of liquid He4 with different geometries are studied by means of a zero-range density functional adjusted to reproduce the line tension obtained in a previous diffusion Monte Carlo calculation (λDMC=0.121K). It is shown that this density functional provides accurate results for the binding energy of large clusters with a reasonable computational effort. © 2005 The American Physical Society.