Continuous-time quantum Monte Carlo algorithm for the lattice polaron

被引：127

作者：

Kornilovitch, PE ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2BZ, England

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.81.5382

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

An efficient continuous-time path-integral quantum Monte Carlo algorithm for the lattice polaron is presented. It is based on Feynman's integration of phonons and subsequent simulation of the resulting single-particle self-interacting system. The method is free from the finite-size and finite-time-step errors and works in any dimensionality and for any range of electron-phonon interaction. The ground-state energy and effective mass of the polaron are calculated for several models. The polaron spectrum can be measured directly by Monte Carlo, which is of general interest.

引用

页码：5382 / 5385

页数：4

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