Cluster representations and the Wolff algorithm in arbitrary external fields
Cluster representations and the Wolff algorithm in arbitrary external fields
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任意外部场中的聚类表示和 Wolff 算法
DOI:
10.1103/physreve.98.063306
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发表时间:
2018
影响因子:
2.4
通讯作者:
Sethna, James P.
中科院分区:
文献类型:
--
作者:
Kent-Dobias, Jaron;Sethna, James P.
We introduce a natural way to extend celebrated spin-cluster Monte Carlo algorithms for fast thermal lattice simulations at criticality, such as the Wolff algorithm, to systems in arbitrary fields, be they linear magnetic vector fields or nonlinear anisotropic ones. By generalizing the “ghost spin” representation to one with a “ghost transformation,” global invariance to spin symmetry transformations is restored at the cost of an extra degree of freedom which lives in the space of symmetry transformations. The ordinary cluster-building process can then be run on the representation. We show that this extension preserves the scaling of accelerated dynamics in the absence of a field for Ising, Potts, andmodels and demonstrate the method's use in modeling the presence of novel nonlinear fields. We also provide ac++library for the method's convenient implementation for arbitrary models.
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DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
L. Chayes;Jonathan Machta;Oliver Redner
通讯作者:
Oliver Redner
DOI:
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发表时间:
1991
期刊:
影响因子:
--
作者:
V. Dotsenko;W. Selke;A. Talapov
通讯作者:
A. Talapov
DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
Oliver Redner;J. Machta;L. Chayes
通讯作者:
L. Chayes
DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
W. Janke
通讯作者:
W. Janke
DOI:
--
发表时间:
1994
期刊:
Physical Review B (Condensed Matter)
影响因子:
--
作者:
Ala;Granato;Kankaala;Kosterlitz;Ying
通讯作者:
Ying