Model concept in the study physical properties of disordered structures

The basis for a successfully working model developed by D. S. Sanditov. and called by him the "model of delocalized atoms", an elementary act observed in a number of molecular-kinetic processes in liquids and amorphous media and manifests itself in the ultimate elastic deformation of the interatomic or intermolecular bond, at a maximum of the quasi-elastic force. As a result, the kinetic unit (atom, group of atoms) is displaced. The nature of this mechanism is a fluctuation process. Several independent conclusions of the main equation of the model of delocalized atoms, proposed by D. S. Sanditov, are presented. The relationship between the main parameters of the model and the equations and quantities of the physics of the glassy state is shown. A comparison is made of the atomic delocalization energy and the free activation energy of viscous flow and glass transition of liquids, as well as a comparison with the energy of formation of a configuron in an intensively developed model of flickering fractals and configurons.