Quantum Monte Carlo by message passingperBonca, J.perGubernatis, J.E.DOE; USDOE, Washington, DC (United States)orgUnited States. Department of Energy.Los Alamos National Lab., NM (United States)New MexicoLos Alamos National Laboratory1993-01-01engWe summarize results of quantum Monte Carlo simulations of the degenerate single-impurity Anderson model using the impurity algorithm of Hirsch and Fye. Using methods of Bayesian statistical inference, coupled with the principle of maximum entropy, we extracted the single-particle spectral density from the imaginary-time Green's function. The variations of resulting spectral densities with model parameters agree qualitatively with the spectral densities predicted by NCA calculations. All the simulations were performed on a cluster of 16 IBM R6000/560 workstations under the control of the message-passing software PVM. We described the trivial parallelization of our quantum Monte Carlo code both for the cluster and the CM-5 computer. Other issues for effective parallelization of the impurity algorithm are also discussed.Pages: (13 p)AlloysQuantum OperatorsProgrammingParallel ProcessingMaterialsAlgorithmsPhysical PropertiesMagnetic MaterialsMathematical OperatorsMathematical LogicMagnetic PropertiesMagnetic MomentsSimulation 665000* -- Physics Of Condensed Matter-- (1992-)Computerized SimulationCalculation Methods990200 -- Mathematics & ComputersKondo EffectDilute AlloysGreen FunctionFunctions99 General And Miscellaneous//Mathematics, Computing, And Information Science75 Condensed Matter Physics, Superconductivity And SuperfluidityMonte Carlo MethodHamiltoniansMagnetic Susceptibility