Static and steady State of polarons in DNA system


AbstractThis study investigate in details the effect of the phonon vibration on the electrical properties forsome short sequences of DNA. The theoretical study is based on the Anderson-Holstein modelHamiltonian for small polaron and on the extended Holstein model Hamiltonian for large polaron.These models provides a convenient description of the charge transport with local and non-localelectron –phonon on site interaction. It is extensively, investigated the properties of the stationarystate polaron and the stady state polaron. Where, It is showed that the system parameters such uslocal and non-local electron-phonon interactions, the electron interaction between DNA bases, theDNA base vibration frequency and base on site energy all have pronounced effects on all kinds ofpolarons states .