Quantum Monte Carlo by message passing Metadata

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Title

  • Main Title Quantum Monte Carlo by message passing

Creator

  • Author: Bonca, J.
    Creator Type: Personal
  • Author: Gubernatis, J.E.
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization
    Contributor Info: DOE; USDOE, Washington, DC (United States)

Publisher

  • Name: Los Alamos National Laboratory
    Place of Publication: New Mexico
    Additional Info: Los Alamos National Lab., NM (United States)

Date

  • Creation: 1993-01-01

Language

  • English

Description

  • Content Description: 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.
  • Physical Description: Pages: (13 p)

Subject

  • Keyword: Alloys
  • Keyword: Quantum Operators
  • Keyword: Programming
  • Keyword: Parallel Processing
  • Keyword: Materials
  • Keyword: Algorithms
  • Keyword: Physical Properties
  • Keyword: Magnetic Materials
  • Keyword: Mathematical Operators
  • Keyword: Mathematical Logic
  • Keyword: Magnetic Properties
  • Keyword: Magnetic Moments
  • Keyword: Simulation 665000* -- Physics Of Condensed Matter-- (1992-)
  • Keyword: Computerized Simulation
  • Keyword: Calculation Methods
  • STI Subject Categories: 990200 -- Mathematics & Computers
  • Keyword: Kondo Effect
  • Keyword: Dilute Alloys
  • Keyword: Green Function
  • Keyword: Functions
  • STI Subject Categories: 99 General And Miscellaneous//Mathematics, Computing, And Information Science
  • STI Subject Categories: 75 Condensed Matter Physics, Superconductivity And Superfluidity
  • Keyword: Monte Carlo Method
  • Keyword: Hamiltonians
  • Keyword: Magnetic Susceptibility

Source

  • Conference: Madi Gras conference on concurrent computing in the physical sciences, Baton Rouge, LA (United States), 18-20 Feb 1993

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Other: DE93012645
  • Report No.: LA-UR-93-1296
  • Report No.: CONF-9302112--2
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 6496468
  • Archival Resource Key: ark:/67531/metadc1211881

Note

  • Display Note: OSTI; NTIS; GPO Dep.