Towards a density functional description of liquid pH2

Details Towards a density functional description of liquid pH2 Towards a density functional description of liquid pH2

2010-12-20

arxiv.org/abs/1012.4383v1

Physics

Condensed Matter

Soft Condensed Matter

24 pages and 8 figures

Scientific paper

A finite-temperature density functional approach to describe the properties of parahydrogen in the liquid-vapor coexistence region is presented. The first proposed functional is zero-range, where the density-gradient term is adjusted so as to reproduce the surface tension of the liquid-vapor interface at low temperature. The second functional is finite-range and, while it is fitted to reproduce bulk pH2 properties only, it is shown to yield surface properties in good agreement with experiments. These functionals are used to study the surface thickness of the liquid-vapor interface, the wetting transition of parahydrogen on a planar Rb model surface, and homogeneous cavitation in bulk liquid pH2.

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