Gaussian quantum Monte Carlo methods for fermions
量子物理
2009-11-10 v2 软凝聚态物质
摘要
We introduce a new class of quantum Monte Carlo methods, based on a Gaussian quantum operator representation of fermionic states. The methods enable first-principles dynamical or equilibrium calculations in many-body Fermi systems, and, combined with the existing Gaussian representation for bosons, provide a unified method of simulating Bose-Fermi systems. As an application, we calculate finite-temperature properties of the two dimensional Hubbard model.
引用
@article{arxiv.quant-ph/0404052,
title = {Gaussian quantum Monte Carlo methods for fermions},
author = {J. F. Corney and P. D. Drummond},
journal= {arXiv preprint arXiv:quant-ph/0404052},
year = {2009}
}
备注
4 pages, 3 figures, Revised version has expanded discussion, simplified mathematical presentation, and application to 2D Hubbard model