Continuous-Time Quantum Monte Carlo Algorithm for the Lattice Polaron

Preprint

17 February 1999

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/9808155

Abstract

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.

Keywords

QUANTUM MONTE CARLO
CONTINUOUS TIME
LATTICE POLARON
CARLO ALGORITHM
PHONONS
POLARON

All Related Versions

Version 1, 1998-08-14, ArXiv
Version 2, 1999-02-17, ArXiv
Published version: Physical Review Letters, 81 (24), 5382.

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