Topological critical slowing down: Variations on a toy model.
Topological critical slowing down: Variations on a toy model.
复制标题
拓扑临界减速:玩具模型的变化。
DOI:
10.1103/physreve.98.013308
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
M. D’Elia
中科院分区:
文献类型:
--
作者:
C. Bonati;M. D’Elia
Numerical simulations of lattice quantum field theories whose continuum counterparts possess classical solutions with nontrivial topology face a severe critical slowing down as the continuum limit is approached. Standard Monte Carlo algorithms develop a loss of ergodicity, with the system remaining frozen in configurations with fixed topology. We analyze the problem in a simple toy model, consisting of the path integral formulation of a quantum mechanical particle constrained to move on a circumference. More specifically, we implement for this toy model various techniques which have been proposed to solve or alleviate the problem for more complex systems, like non-Abelian gauge theories, and compare them both in the regime of low temperature and in that of very high temperature. Among the various techniques, we propose an alternative algorithm which completely solves the freezing problem, but unfortunately is specifically tailored for this particular model and not easily exportable to more complex systems.
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DOI:
10.1016/j.cpc.2006.12.001
发表时间:
2007-03
期刊:
Comput. Phys. Commun.
影响因子:
--
作者:
U. Wolff
通讯作者:
U. Wolff
DOI:
10.1088/1742-6596/706/2/022004
发表时间:
2015-12
期刊:
Journal of Physics: Conference Series
影响因子:
--
作者:
G. Aarts
通讯作者:
G. Aarts
影响因子:
64.8
作者:
Borsanyi, S.;Fodor, Z.;Szabo, K. K.
通讯作者:
Szabo, K. K.
影响因子:
--
作者:
Cossu G
通讯作者:
Cossu G