%0 Journal Article
%T On the Lindemann Criterion for Quantum Clusters at Very Low Temperature
%A Guardiola, R.
%A Navarro, J.
%J Journal of Physical Chemistry A
%D 2011
%V 115
%N 25
%I Amer Chemical Soc
%@ 1089-5639
%G English
%F Guardiola+Navarro2011
%O ISI:000291895500012
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=669), last updated on Tue, 02 Aug 2011 15:57:02 +0000
%X The Lindemann criterion to discern the solid-like or liquid-like nature of a quantum cluster at T = 0 is discussed. A critical analysis of current Lindemann parameters is presented and a new parameter is proposed that is appropriate to study quantum clusters made of identical particles. A simple model wave function is introduced to fix the range of variation of these parameters. The model presents two extreme limits that correspond to either a liquid-like or a solid-like system; besides, it fulfills the Bose symmetry and also permits evaluations without symmetrization. Variational and diffusion Monte Carlo calculations are also performed for clusters of spinless bosons interacting through Lennard-Jones potentials. It is shown that the liquid-like or solid-like character of quantum clusters at zero temperature cannot be simply established in terms of a single parameter.
%R 10.1021/jp1111313
%U https://doi.org/10.1021/jp1111313
%P 6843-6850