Quantum Monte Carlo by message passing [electronic resource].
- Washington, D.C. : United States. Dept. of Energy, 1993. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- Pages: (13 pages) : digital, PDF file
- Additional Creators:
- Los Alamos National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
- We 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.
- Published through SciTech Connect., 01/01/1993., "la-ur-93-1296", " conf-9302112--2", "DE93012645", Madi Gras conference on concurrent computing in the physical sciences, Baton Rouge, LA (United States), 18-20 Feb 1993., and Bonca, J.; Gubernatis, J.E.
- Funding Information:
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