APPLICATION OF THE PROJECTED DYNAMICS METHOD TO AN ANISOTROPIC HEISENBERG MODEL

S. J. Mitchell (), M. A. Novotny and José D. Muñoz
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S. J. Mitchell: Center for Materials Research and Technology and Department of Physics, Florida State University, Tallahassee, Florida 32306-4351, USA;
M. A. Novotny: Supercomputer Computations Research Institute, Florida State University, Tallahassee, Florida 32306-4130, USA
José D. Muñoz: Institute for Computer Applications 1, University of Stuttgart, D-70569 Stuttgart, Germany;

International Journal of Modern Physics C (IJMPC), 1999, vol. 10, issue 08, 1503-1512

Abstract: The Projected Dynamics method was originally developed to study metastable decay in ferromagnetic discrete spin models. Here, we apply it to a classical, continuous Heisenberg model with anisotropic ferromagnetic interactions, which evolves under a Monte Carlo dynamic. The anisotropy is sufficiently large to allow comparison with the Ising model. We describe the Projected Dynamics method and how to apply it to this continuous-spin system. We also discuss how to extract metastable lifetimes and how to extrapolate from small systems to larger systems.

Keywords: Dynamic Monte Carlo; Heisenberg model; Advanced algorithms; Metastability; Projected dynamics (search for similar items in EconPapers)
Date: 1999
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DOI: 10.1142/S0129183199001285

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