Monte Carlo Algorithms For the Fully Frustrated XY Model
نویسنده
چکیده
We investigate local update algorithms for the fully frustrated XY model on a square lattice. In addition to the standard updating procedures like the Metropolis or heat bath algorithm we include overrelaxation sweeps, implemented through single spin updates that preserve the energy of the configuration. The dynamical critical exponent (of order two) stays more or less unchanged. However, the integrated autocorrelation times of the algorithm can be significantly reduced. Hj Hj AAU AAU Hj Hj AAU AAU Hj Hj Figure 1: A ground state configuration of the FFXY model. The dotted lines represent links with antiferromagnetic couplings, the full lines are links with ferromagnetic couplings.
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