Spontaneous second order phase transition. Amorphous branch

Abstract

A version of the second order phase transition theory, in which the Nernst theorem holds automatically, is proposed. The theory is constructed in terms of the order parameter and the (configurational) entropy. It faithfully reproduces the solutions of Landau theory as well as stable existence of ordered and disordered states and takes into account the existence of amorphous metastable states. Finally, phenomenon of growth of fluctuations magnitude due to random first order transitions between stable and metastable states as their energies approach each other at a critical point is analyzed.