  The glass transition is considered as a phase transition in the system of
topologically protected excitations in matter structure. The critical behavior
of the system is considered both in statics and dynamics cases. It is shown in
the simple model describing the topological defects system in the elastic
medium with non-zero shear modulus, most of characteristic thermodynamic and
kinetic properties of glass transition are reproduced: the
Vogel--Fulcher--Tammann law; the behavior of susceptibility, and non-linear
susceptibilities; heat capacity behavior; and boson peak near the glass
transition temperature.
