Continuous Time Quantum Monte Carlo method for fermions
Strongly Correlated Electrons
2009-11-10 v2
Abstract
We present numerically exact continuous-time Quantum Monte Carlo algorithm for fermions with a general non-local in space-time interaction. The new determinantal grand-canonical scheme is based on a stochastic series expansion for the partition function in the interaction representation. The method is particularly applicable for multi-band time-dependent correlations since it does not invoke the Hubbard-Stratonovich transformation. The test calculations for exactly solvable models as well results for the Green function and for the time-dependent susceptibility of the multi-band super-symmetric model with a spin-flip interaction are discussed.
Cite
@article{arxiv.cond-mat/0411344,
title = {Continuous Time Quantum Monte Carlo method for fermions},
author = {A. N. Rubtsov and V. V. Savkin and A. I. Lichtenstein},
journal= {arXiv preprint arXiv:cond-mat/0411344},
year = {2009}
}
Comments
10 pages, 7 Figures