Canonical and Grand Canonical Ensemble Expectation Values from Quantum Monte Carlo Simulations
Strongly Correlated Electrons
2009-11-10 v1
Abstract
We show how canonical ensemble expectation values can be extracted from quantum Monte Carlo simulations in the grand canonical ensemble. In order to obtain results for all particle sectors, a modest number of grand canonical simulations must be performed, each at a different chemical potential. From the canonical ensemble results, grand canonical expectation values can be extracted as a continuous function of the chemical potential. Results are presented from the application of this method to the two-dimensional Hubbard model.
Keywords
Cite
@article{arxiv.cond-mat/0302281,
title = {Canonical and Grand Canonical Ensemble Expectation Values from Quantum Monte Carlo Simulations},
author = {R. D. Sedgewick and D. J. Scalapino and R. L. Sugar and L. Capriotti},
journal= {arXiv preprint arXiv:cond-mat/0302281},
year = {2009}
}
Comments
5 pages, 5 figures