Improved Langevin Methods for Spin Systems

Details Improved Langevin Methods for Spin Systems Improved Langevin Methods for Spin Systems

1992-11-13

arxiv.org/abs/hep-lat/9211037v2

Phys.Lett. B302 (1993) 271-278

Physics

High Energy Physics

High Energy Physics - Lattice

16, DAMTP-92-72

Scientific paper

10.1016/0370-2693(93)90396-Y

We investigate methods for variance reduction and the elimination of systematic error in a Fourier accelerated Langevin scheme for general spin models. We present results for the $SU(3)\times SU(3)/SU(3)$ model in two-dimensions that are consistent wit h those from multi-grid methods. We argue that the timing for the Langevin method makes it comparable to multi-grid for a given level of error.

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