Nonlinear Localized Excitations in Helix Macromolecules

Abstract

Physico-mechanical properties of polymers in solid state, in particular conditions of their structural transformations, are substantially defined by existence and mobility of elementary nonlinear excitations. The localized oscillatory excitations (breathers) which have been revealed in crystalline PE are important for thermodynamic studies. In the given work the breathers in more complex crystalline of helix macromolecules are analytically investigated for the first time. We show that introduction of adequate variables allows to construct the continuum model describing spatially localized excitations with internal degree of freedom. Characteristic parameters of breathers and conditions of their mobility are defined.