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.
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页码：2990 / 2993
页数：4
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