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On the Transformation of Collective Modes in a Viscoelastic Medium
Author(s) -
Olemskoi A. I.,
Panin V. E.,
Petrunin V. A.
Publication year - 1987
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221390205
Subject(s) - viscoelasticity , excited state , physics , transformation (genetics) , relaxation (psychology) , dispersion (optics) , phenomenological model , viscosity , classical mechanics , shear stress , condensed matter physics , mechanics , quantum mechanics , thermodynamics , chemistry , psychology , social psychology , biochemistry , gene
The transition between „strongly” and „weakly” excited states of the condensed matter is considered. The collective mode, which is connected with the shear components of stress and strain, changes the dispersion law from imaginary to real. This transformation takes place for a boundary wave vector, which is determined by the viscosity of the medium. The reactive and relaxation components of strain perform roles of „breaking and restoring symmetry” variables, consequently. On the base of phenomenological and microscopic approaches a synergetic model of kinetic transformation between strongly and weakly excited states is considered.