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Selected Works of Ehsan Khatami
Presentation
QUEST: QUantum Electron Simulation Toolbox
SciDAC 2010 (2010)
  • C.-R. Lee, National Tsinghua University
  • S. Chiesa, University of California, Davis
  • C. N. Varney, Georgetown University
  • Ehsan Khatami, Georgetown University
  • Z. Bai, University of California, Davis
  • E. D'Azevedo, Oak Ridge National Laboratory
  • M. Jarrell, Louisiana State University
  • Th. Maier, Oak Ridge National Laboratory
  • S. Savrasov, University of California, Davis
  • R. T. Scalettar, University of California, Davis
  • K. Tomko, Ohio Supercomputer Center
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Abstract
QUEST is a part of the SciDAC project on next generation multi-scale quantum simulation software for strongly correlated materials. It is a Fortran 90/95 package that implements the determinant quantum Monte Carlo (DQMC) method for simulation of magnetic, superconducting, and metal-insulator transitions in model Hamiltonians. In this paper, we show how QUEST is capable of treating lattices of unprecedentedly large sizes and how this can be fruitful in the study of the physics of trapped fermionic system, in the development of more efficient solvers for Dynamical Mean Field Theory (DMFT) and as a tool to test and, in the future, improve diagrammatic approaches such as the Parquet approximation. We will also present a range of synergistic activities on the development of stable and robust numerical algorithms and hybrid granularity parallelization scheme that combines algorithmic and implementation techniques to high-performance DQMC simulation. The work reported here is a key step forward in achieving the goals of our SciDAC project.
Disciplines
Publication Date
July, 2010
Location
Chattanooga, TN
Citation Information
C.-R. Lee, S. Chiesa, C. N. Varney, Ehsan Khatami, et al.. "QUEST: QUantum Electron Simulation Toolbox" SciDAC 2010 (2010)
Available at: http://works.bepress.com/ehsan_khatami/29/