Magnetic Susceptibility
ark: ark:/67531/metadc1211881
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.
Parallel Processing
Hamiltonians
Mathematical Logic
Mathematical Operators
Materials
Gubernatis, J.E.
Bonca, J.
Physical Properties
Calculation Methods
Magnetic Properties
Algorithms
Los Alamos National Laboratory
Quantum Monte Carlo by message passing
Alloys
Monte Carlo Method
Functions
osti: 6496468
1993-01-01
75 Condensed Matter Physics, Superconductivity And Superfluidity
Magnetic Materials
990200 -- Mathematics & Computers
Computerized Simulation
Kondo Effect
rep-no: LA-UR-93-1296
Pages: (13 p)
Green Function
Magnetic Moments
99 General And Miscellaneous//Mathematics, Computing, And Information Science
Simulation 665000* -- Physics Of Condensed Matter-- (1992-)
United States. Department of Energy.
grantno: W-7405-ENG-36
Programming
Quantum Operators
Madi Gras conference on concurrent computing in the physical sciences, Baton Rouge, LA (United States), 18-20 Feb 1993
rep-no: CONF-9302112--2
Dilute Alloys
other: DE93012645