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Study of one-dimensional Holstein polaron in infinite lattice
Author(s):
Ren Xue-Zao
,
Liao Xu
,
Huang Shu-Wen
,
Wang Ke-Lin
Pages:
2680
-
2683
Year:
2009
Issue:
4
Journal:
Acta Physica Sinica
Keyword:
相干态正交化展开
;
极化子
;
模拟退火方法
;
Abstract:
利用相干态正交化展开法,得到了一维Holstein模型基态能量的解析表达式.为了便于比较,将系统的基态试探波函数逐级展开到三级近似,计算了不同格点、不同耦合强度下的基态能量,在展开到3级近似时,所得结果与数值计算一致.
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