ALMOST GAUGE-INVARIANT LATTICE ACTIONS FOR CHIRAL GAUGE-THEORIES, USING LAPLACIAN GAUGE-FIXING

被引：11
作者：
VINK, JC
机构：
[1] University of California at San Diego, Department of Physics 0319, La Jolla
来源：
PHYSICS LETTERS B | 1994年 / 321卷 / 03期
关键词：
D O I：
10.1016/0370-2693(94)90471-5
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Straightforward discretizations of chiral gauge theories lead to lattice actions S' in which gauge invariance is broken. We describe a method to obtain an almost gauge invariant lattice action S from the action S'. The new action S is defined such that for all gauge fields on a gauge orbit it is the same (up to a global gauge transformation) as the action S' evaluated for the gauge field fixed to a smooth gauge. We use the recently introduced Laplacian gauge to compute this gauge fixed gauge field without Gribov ambiguities. In a numerical simulation with S it is not necessary to fix the gauge, and hence gauge fixing terms and Fadeev-Popov ghosts are not required. A hybrid Monte Carlo algorithm for simulations with this new action is described.
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收藏
页码：239 / 245
页数：7
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