Single excitation migration in molecular chain with an attached molecular structure: non-adiabatic polaron model

TL;DR

This paper investigates the stable migration of a single vibron excitation in a biomolecular system with an attached structure, using a non-adiabatic polaron model, revealing long-distance excitation transfer.

Contribution

It introduces a non-adiabatic polaron model to explain vibron excitation migration, contrasting with previous non-polaron models, and demonstrates long-range excitation transfer.

Findings

Excitation appears on large intramolecular distances with high probability.

The non-adiabatic polaron model predicts stable excitation migration.

Contrasts with non-polaron model predictions.

Abstract

In this paper we consider the possibility of the stable migration of the single vibron excitation in the system consisting of biomolecule and the attached molecular structure. The model is based on the assumption of the vibron self-trapping and the formation of the non-adiabatic polaron quasiparticle. We have shown that, contrary to the prediction of the non-polaron model, the excitation appears on a large intramolecular distance from its origin with a high probability.