Nonlinear dynamics of molecular systems and the correlations of internal motions in oligopeptides

The dynamical properties of significantly nonlinear molecular systems with conformational mobility are discussed. The peculiarities of the figurative point movements along the potential energy hypersurfaces with a lot of saddle points are investigated. The methods of dynamical correlation functions of dihedral angles and calculation of free energy maps are developed. These correlation functions and free energy maps can characterize the dynamical properties of the nonlinear systems in detail. The dynamical properties of some oligopeptides are described.