Abstract
The name `quantum crystals' is used for solids with large zero-point energy. The solidified rare gases like solid helium and neon are the most conspicuous examples of this class of materials. In this paper the results of theoretical investigations of interatomic interactions and physical properties of quantum crystals within the self-consistent phonon theory are presented. The description of the interatomic forces and the theory connecting them with the dynamical and thermodynamical properties of solid <SUP>4</SUP>He and Ne are given in terms of the (exp,m) Buckingham, (n,m) Lennard-Jones and the (exp,exp) Morse pair potentials. Calculating the dynamics of crystal lattice and the thermodynamical properties of h.c.p. <SUP>4</SUP>He and f.c.c. Ne tests relative merits of these potential functions and allows to compare them with the experimental data.
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