The Temperature Dependence of Exciton-Phonon Coupling in the Context of Davydov’s Model; The Dynamic Damping of Soliton

  • M. Satarić
  • Z. Ivić
  • R. Žakula
Part of the NATO ASI Series book series (NSSB, volume 243)


The temperature-dependent behaviour of localized excitons in a linear molecular α-helix chain model is investigated. After transforming Davydov’s original Hamiltonian for the α-helix soliton to include Bogoliubov’s variational theorem, the temperature dependence of the “threshold” of solitonic solution is obtained. We also investigated the damping of a soliton under the influence of the thermal bath. The approach is based on the consequent microscopic treatment in context of quantum Langevin equation.


Free Energy Schrodinger Equation Thermal Bath Model Hamiltonian Localize Exciton 
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Copyright information

© Springer Science+Business Media New York 1990

Authors and Affiliations

  • M. Satarić
    • 1
  • Z. Ivić
    • 2
  • R. Žakula
    • 2
  1. 1.Novi SadYugoslavia
  2. 2.Laboratory of Theoretical PhysicsInstitute of Nuclear Sciences “Boris Kidrič”BelgradeYugoslavia

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