Phys. Rev. Lett. 93, 260401 (2004) [4 pages]Gaussian Quantum Monte Carlo Methods for Fermions and BosonsReceived 8 April 2004; published 20 December 2004 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 relevant to the Fermi sign problem, we calculate finite-temperature properties of the two dimensional Hubbard model and the dynamics in a simple model of coherent molecular dissociation. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.93.260401
DOI:
10.1103/PhysRevLett.93.260401
PACS:
03.75.Ss, 02.70.Tt, 03.65.Ca, 42.50.Lc
See AlsoComment: S. M. Rombouts, Comment on “Gaussian Quantum Monte Carlo Methods for Fermions and Bosons”, Phys. Rev. Lett. 96, 188901 (2006). Reply: J. F. Corney and P. D. Drummond, Corney and Drummond Reply:, Phys. Rev. Lett. 96, 188902 (2006). |
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