| 比较两种方法计算弗留里希极化子的能量 |
| |
| 引用本文： | 刘文,苏希玉,孟繁华.比较两种方法计算弗留里希极化子的能量[J].曲阜师范大学学报,2006,32(3):77-79,84. |
| |
| 作者姓名： | 刘文 苏希玉 孟繁华 |
| |
| 作者单位： | 曲阜师范大学物理工程学院,山东省曲阜市273165 |
| |
| 摘 要： | 在消去电子坐标的正则变换基础之上，采用包含双声子关联效应的波函数计算运动极化子的基态能量，得到了双声子关联效应对能量的修正，并与在LLP理论基础上用微扰论求得的能量修正作比较．结果发现：在相同的动量下，前者求得的系统的基态能量较低．
|
| 关 键 词： | 极化子 关联效应 基态能量 |
| 文章编号： | 1001-5337（2006）03-0077-03 |
| 收稿时间： | 2005-09-22 |
| 修稿时间： | 2005-09-22 |
A Comparison of two Methods to Calculate the Ground-state Energy of a Polaron |
| |
| LIU Wen,SU Xi-yu,MENG Fan-hua.A Comparison of two Methods to Calculate the Ground-state Energy of a Polaron[J].Journal of Qufu Normal University(Natural Science),2006,32(3):77-79,84. |
| |
| Authors: | LIU Wen SU Xi-yu MENG Fan-hua |
| |
| Institution: | College of Physics and Engineering, Qufu Normal University, 273165, Qufu, Shandong, PRC |
| |
| Abstract: | Based on LLP canonical transformation, a different polaron ground-state which includes the two-phonon correlation is adopted to calculate the ground-state energy of polaron. The energy created by two-phonon correlation is obtained. The result shows that the ground-state energy obtained including the correlation effect is smaller than that obtained by perturbative theory. |
| |
| Keywords: | polaron correlation effect ground-state energy |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
