Directed update for the Stochastic Green Function algorithm

Details Directed update for the Stochastic Green Function algorithm Directed update for the Stochastic Green Function algorithm

2008-06-09

arxiv.org/abs/0806.1410v2

Phys. Rev. E 78, 056707 (2008)

Physics

Condensed Matter

Statistical Mechanics

11 pages, 4 figures

Scientific paper

10.1103/PhysRevE.78.056707

In a recent publication (Phys. Rev E 77, 056705 (2008)),we have presented the stochastic Green function (SGF) algorithm, which has the properties of being general and easy to apply to any lattice Hamiltonian of the form H=V-T, where V is diagonal in the chosen occupation number basis and T has only positive matrix elements. We propose here a modified version of the update scheme that keeps the simplicity and generality of the original SGF algorithm, and enhances significantly its efficiency.

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