title: Extended Holstein small polaron model for charge transfer in dry DNA.
abstract: In this paper, the charge transfer problem in dry DNA was investigated by employing an extended Holstein small polaron model with external potential traps being involved in consideration. The ground state energy and the probability amplitude of polaron in various DNA chains with different external trap potentials were obtained by variational method with the trial function being taken in coherent state form. The stability of transfered charges in various circumstances was discussed accordingly.
authors.affiliation: Institute of Thin Film and Nano materials, Wuyi University, Jiangmen 529020, PR China. yiwangll@yahoo.com.cn
authors.forename: Yi
authors.initials: Y
authors.lastname: Wang
authors.forename: Liang
authors.initials: L
authors.lastname: Fu
authors.forename: Ke-Lin
authors.initials: KL
authors.lastname: Wang
mesh_terms: D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004247:DNA / Q000737:chemistry*; D008962:Models, Theoretical
chemical_list: D004247:DNA