Quantum Cell Model for Solids at Low Temperatures

摘要

The cell model has been widely applied to classical liquids and has recently been applied to quantum liquids. In the cell model it is assumed that each molecule moves independently in a cell formed by the neighboring molecules. This assumption is more reasonable for the solid state than for the liquid state. In the present investigation the cell model is applied to solids at low temperatures. Results are reported for Ar, H2, D2, and4He. Agreement with experiment is good.