Phase transitions and quantum states in strontium titanate and solid hydrogen

A comparatively new approach to the Tsub(cr) multiplicity problem is being developed using as an example the analysis of experimental data on SrTiO3 and solid hydrogen spectroscopy. The existence of similar regularities is shown both for critical temperatures and quantum state energies in strontium titanate and solid hydrogen. A common nature of relationship between the quantum states and critical points in these substances is established. An explanation of the above-mentioned regularities is suggested on the basis of imperfect Bose gas