article · Journal of Physics Condensed Matter
This research examines charge transport in DNA by investigating modulational instability within the Peyrard-Bishop-Holstein model. By applying a continuum approximation, the framework reduces to a modified Klein-Gordon-Schrödinger system, allowing linear stability analysis to be conducted. The analysis explores modulational instability across varied values of the nearest-neighbour transfer integral. Numerical simulations confirm these theoretical predictions, demonstrating the formation of localised structures as charges propagate. In addition, the findings demonstrate that the spreading and distribution of electric charge depend heavily on the strength of the coupling between the charge and the vibrational movements of the molecular lattice.
Charge transport along molecular chains is fundamental to molecular physics and the study of bio-macromolecules. By identifying how instabilities and localised structures form, this theoretical work clarifies how mechanical vibrations in a molecular lattice influence the conduction and retention of electrical charges in biomolecular structures.
The abstract does not indicate an application pathway.
AI-generated from the published abstract. Always read the original work before citing.
We report on modulational instability (MI) on a DNA charge transfer model known as the Peyrard-Bishop-Holstein (PBH) model. In the continuum approximation, the system reduces to a modified Klein-Gordon-Schrödinger (mKGS) system through which linear stability analysis is performed. This model shows some possibilities for the MI region and the study is carried out for some values of the nearest-neighbor transfer integral. Numerical simulations are then performed, which confirm analytical predictions and give rise to localized structure formation. We show how the spreading of charge deeply depends on the value of the charge-lattice-vibrational coupling.
This page summarises published work. The authoritative version sits with the publisher.
DOI: 10.1088/0953-8984/21/33/335101
Is something wrong with this record? Report it or request removal.
Discussion
Have you built on this work, tried to replicate it, or seen it applied in practice? Share what you know. Verified researchers and MARATTO™ domain experts can open a discussion, and any member can reply. Contributions are reviewed before they appear.
No discussion yet. Open the first thread.
New to MARATTO™? Create a free account.
