Quantum phase-space simulations of fermions and bosons

Details Quantum phase-space simulations of fermions and bosons Quantum phase-space simulations of fermions and bosons

2005-06-02

arxiv.org/abs/cond-mat/0506040v1

Comp. Phys. Comm. 169, 412 (2005).

Physics

Condensed Matter

Other Condensed Matter

4 pages, 2 figures, to appear in Comp. Phys. Comm

Scientific paper

10.1016/j.cpc.2005.03.091

We introduce a unified Gaussian quantum operator representation for fermions and bosons. The representation extends existing phase-space methods to Fermi systems as well as the important case of Fermi-Bose mixtures. It enables simulations of the dynamics and thermal equilibrium states of many-body quantum systems from first principles. As an example, we numerically calculate finite-temperature correlation functions for the Fermi Hubbard model, with no evidence of the Fermi sign problem.

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