Theoretical Physics

 

This division of the Physicotechnical Institute was created in 1992 by combining two laboratories: “Theories of the Solid Body and Semiconductors”, which was founded in 1964 by Professor P.M. Karageorgi-Alkalayev, and “Laboratory of Wave Processes”, organized by Professor F.Kh. Abdullaev in 1984

In the first direction, research was carried out on injection and photoelectric phenomena in semiconductors, the interaction of impurities and defects, as well as the processes of self-organization in multicomponent semiconductors. Much attention was paid to applications of the results of theoretical studies to improve the efficiency of semiconductor solar cells.

The second line of research relates to the theory of nonlinear waves, mainly solitons, in optical fibers, photonic crystals, and Bose - Einstein condensates. The main scientific achievements include the construction of the theory of soliton propagation in optical media with random parameters, the prediction of the existence of localized states of the Bose-Einstein condensate in periodic potentials, the detection of the stability criterion of condensate in various types of traps, the study of dissipative solitons in active optical resonators and systems with parity symmetry - time.