Gaussian quantum Monte Carlo methods for fermions

Details Gaussian quantum Monte Carlo methods for fermions Gaussian quantum Monte Carlo methods for fermions

2004-04-08

arxiv.org/abs/quant-ph/0404052v2

Phys. Rev. Lett. 93, 260401 (2004).

Physics

Quantum Physics

4 pages, 3 figures, Revised version has expanded discussion, simplified mathematical presentation, and application to 2D Hubba

Scientific paper

10.1103/PhysRevLett.93.260401

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.

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