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Published on: September 30, 2014
Quantum effects on liquid dynamics as evidenced by the presence of well-defined collective excitations in liquid
1Consejo Superior de Investigaciones Cientificas, Serrano 121-123, E-28006 Madrid, Spain.
Abstract:
The origin of the well-defined collective excitations found in liquid para-H2 by recent experiments is investigated. The persistence of their relatively long lifetimes down to microscopic scales is well accounted for by calculations carried out by means of path-integral-centroid molecular dynamics. In contrast only overdamped excitations are found in calculations carried within the classical limit. The results provide fully quantitative evidence of quantum effects on the dynamics of a simple liquid.
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