%0 Journal Article
%T Extended Holstein polaron model for charge transfer in dry DNA
%A Liu Tao
%A Wang Yi
%A Wang Ke-Lin
%A <br>刘涛
%A 王忆
%A 汪克林
%J 中国物理 B
%D 2007
%I 
%X The variational method is applied to the study of charge transfer in dry DNA by using an extended Holstein small polaron model in two cases: the site-dependent finite-chain discrete case and the site-independent continuous one. The treatments in the two cases are proven to be consistent in theory and calculation. Discrete and continuous treatments of Holstein model both can yield a nonlinear equation to describe the charge migration in an actual long-range DNA chain. Our theoretical results of binding energy Eb, probability amplitude of charge carrier \phi and the relation between energy and charge--lattice coupling strength are in accordance with the available experimental results and recent theoretical calculations.
%K Holstein polaron model
%K dry DNA
%K charge transfer
%K variational method<br>霍尔斯坦种乳牛
%K 极化子模型
%K 电荷转移
%K DNA
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=CD8D6A6897B9334F09D8D1648C376FB4&aid=FF458534E88FE56F78CEE903C0A6AE1F&yid=A732AF04DDA03BB3&vid=7801E6FC5AE9020C&iid=CA4FD0336C81A37A&sid=4E6F5C60B72D9B1C&eid=44A4891E33BFF455&journal_id=1009-1963&journal_name=中国物理&referenced_num=3&reference_num=30