LATTICE SADDLE-POINT CONFIGURATIONS IN SU(2)3

被引:11
|
作者
DUNCAN, A [1 ]
MAWHINNEY, RD [1 ]
机构
[1] COLUMBIA UNIV,DEPT PHYS,NEW YORK,NY 10027
基金
美国国家科学基金会;
关键词
D O I
10.1016/0370-2693(92)90663-O
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We have implemented a procedure, which we call extremization, that deterministically evolves a configuration of lattice field theory towards a solution of the lattice field equations. The solution obtained need not be a local minimum of the action. A Fourier accelerated version of the algorithm is used in three-dimensional SU (2) lattice gauge theory to generate saddle-point solutions of the lattice field equations from Monte Carlo generated lattices. We find that the string tension persists under moderate extremization, during which the average action decreases by a factor of about 100 and the lattices show localized peaks in the action density, as seen in cooling. Continued extremization removes the plateau in the Creutz ratios.
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页码:423 / 427
页数:5
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