Cookies

We use cookies to ensure that we give you the best experience on our website. By continuing to browse this repository, you give consent for essential cookies to be used. You can read more about our Privacy and Cookie Policy.


Durham Research Online
You are in:

A generalised Davydov-Scott model for polarons in linear peptide chains.

Luo, Jingxi and Piette, Bernard (2017) 'A generalised Davydov-Scott model for polarons in linear peptide chains.', European physical journal B., 90 (8). p. 155.

Abstract

We present a one-parameter family of mathematical models describing the dynamics of polarons in periodic structures, such as linear polypeptides, which, by tuning the model parameter, can be reduced to the Davydov or the Scott model. We describe the physical significance of this parameter and, in the continuum limit, we derive analytical solutions which represent stationary polarons. On a discrete lattice, we compute stationary polaron solutions numerically. We investigate polaron propagation induced by several external forcing mechanisms. We show that an electric field consisting of a constant and a periodic component can induce polaron motion with minimal energy loss. We also show that thermal fluctuations can facilitate the onset of polaron motion. Finally, we discuss the bio-physical implications of our results.

Item Type:Article
Full text:(AM) Accepted Manuscript
Available under License - Creative Commons Attribution.
Download PDF
(571Kb)
Full text:(VoR) Version of Record
Available under License - Creative Commons Attribution.
Download PDF
(2345Kb)
Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1140/epjb/e2017-80209-2
Publisher statement:© The Author(s) 2017 Open Access This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Date accepted:14 June 2017
Date deposited:03 July 2017
Date of first online publication:16 August 2017
Date first made open access:No date available

Save or Share this output

Export:
Export
Look up in GoogleScholar