Electron-electron interaction effect on the conformational soliton of deoxyribonucleic acid

The local conformational behavior of deoxyribonucleic acid (DNA) has been d iscussed by considering the electron-electron interaction. We set up the co upled nonlinear equations to describe the interaction between the longitudi nal displacement of DNA backbone and the electronic wave function. Under th e case of approximated condition, we obtain the analytic solution of the el ectronic wave function and longitudinal displacement. The influence of elec tron-electron interaction upon the parameters of conformational soliton suc h as the amplitude and width have been revaluated. With the increasing of e lectron-electron interaction, the amplitude and half-width will increase.