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Global Demons in Field Theory : Critical Slowing Down in the Xy Model | | Dimitri Kusnezov
; John Sloan
; | | Date: |
27 Jul 1992 | | Journal: | Nucl.Phys. B409 (1993) 635-662 | | Subject: | hep-lat | | Affiliation: | Yale) and John Sloan (Ohio State | | Abstract: | We investigate the use of global demons, a `canonical dynamics’, as an approach to simulating lattice regularized field theories. This deterministically chaotic dynamics is non-local and non-Hamiltonian, and preserves the canonical measure rather than $delta(H-E)$. We apply this inexact dynamics to the 2D XY model, comparing to various implementations of hybrid Monte Carlo, focusing on critical exponents and critical slowing down. In addition, we discuss a scheme for making energy non-conserving dynamical algorithms exact without the use of a Metropolis hit. | | Source: | arXiv, hep-lat/9207030 | | Services: | Forum | Review | PDF | Favorites | |
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