Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2005-03-26
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
12 pages, 3 figures, revtex4 preprint
Scientific paper
Experiments suggest that localization via self-trapping plays a central role in the behavior of equilibrated low mass particles in both liquids and in supercritical fluids. In the latter case, the behavior is dominated by the liquid-vapor critical point which is difficult to probe, both experimentally and theoretically. Here, for the first time, we present the results of path-integral computations of the characteristics of a self-trapped particle at the critical point of a Lennard-Jones fluid for a positive particle-atom scattering length. We investigate the influence of the range of the particle-atom interaction on trapping properties, and the pick-off decay rate for the case where the particle is ortho-positronium.
Miller Bruce N.
Reese Terrence L.
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