Skip to content
No description, website, or topics provided.
C++ CMake Shell Gnuplot
Branch: master
Clone or download
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Permalink
Type Name Latest commit message Commit time
Failed to load latest commit information.
bcl
check
config
test
worms
.gitignore
.travis.yml
CMakeLists.txt
LICENSE_1_0.txt
README.md
bcl.hpp
options.hpp
worms.cpp
worms.op

README.md

Build Status

worms: a simple worm code

This is a sample code describing how the non-reversible worm algorithm (a.k.a directed-loop algorithm) can be implemented in the continuous imaginary time path integral representation. It calculatetes an S=1/2 antiferromagnetic Heisenberg chain in a longitudinal magnetic field.

Prerequisites

Compilation

mkdir worms-build
cd worms-build
cmake [path-to-worms-source-directory]
make
make test

Command line options

Please see the output of

./worms -h

Release Note

  • Release 1.0 (2013/09/12)

    • Initial version
  • Release 1.1 (2014/02/24)

    • Fixed generation of transition matrix under the magnetic field
    • Updated logic to optimize number of worms per MCS
    • Added energy measurement
    • Added timer
    • Updated documents
    • Added check scripts and tests

References

  • O.F. Syljuasen and A.W. Sandvik, "Quantum Monte Carlo with directed loops," Phys. Rev. E 66, 046701 (2002).
  • N. Kawashima and K. Harada, "Recent Developments of World-Line Monte Carlo Methods," J. Phys. Soc. Jpn. 73, 1379 (2003).
  • H. Suwa and S. Todo, "Markov Chain Monte Carlo Method without Detailed Balance," Physical Review Letters 105, 120603 (2010).
  • S. Todo, "Loop Algorithm" in Strongly Correlated Systems: Numerical Methods (Springer Series in Solid-State Sciences), ed. A. Avella and F. Mancini (Springer-Verlag, Berlin, 2013), p. 153.

Developers

  • Synge Todo (University of Tokyo)
You can’t perform that action at this time.