On the vibron-polaron damping in quasi 1D macromolecular chains

TL;DR

This paper investigates how vibrons in quasi 1D macromolecular chains interact with phonons, forming polaron states, and analyzes their damping behavior depending on temperature and coupling strength.

Contribution

It introduces a detailed analysis of vibron-polaron formation and damping regimes in quasi 1D macromolecular structures, considering temperature effects and system parameters.

Findings

Identification of two distinct damping regimes.

Dependence of polaron properties on temperature and coupling.

Insights into vibron-phonon interaction effects.

Abstract

The properties of the intramolecular vibrational excitation (vibron) in a quasi 1D macromolecular structure are studied. It is supposed that due to the vibron interaction with optical phonon modes, a vibron might form partially dressed small polaron states. The properties of these states are investigated in dependence on the basic system parameters and temperature of a thermal bath. We also investigate the process of damping of the polaron amplitude as a function of temperature and vibron-phonon coupling strength. Two different regimes of the polaron damping are found and discussed.