Renormalization-group study of the one-dimensional polaron problem

被引:7
作者
Keil, M [1 ]
Schoeller, H
机构
[1] Univ Gottingen, Inst Theoret Phys, D-37073 Gottingen, Germany
[2] Forschungszentrum Karlsruhe, Inst Nanotechnol, D-76021 Karlsruhe, Germany
[3] Univ Karlsruhe, Inst Theoret Festkorperphys, D-76128 Karlsruhe, Germany
来源
PHYSICAL REVIEW B | 2000年 / 62卷 / 05期
关键词
D O I
10.1103/PhysRevB.62.2990
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We investigate the one-dimensional polaron problem and calculate the ground-state energy and the effective mass. We use a real-time renormalization-group method and compare our results with first- and second-order perturbation theory, with Feynman's variational principle, and with the method of Lee, Low, and Pines.
引用
收藏
页码:2990 / 2993
页数:4
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