Phase structure and monopoles in U(1) gauge theory.
Phase structure and monopoles in U(1) gauge theory.
复制标题
U(1) 规范理论中的相结构和单极子。
DOI：
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发表时间：
1994
期刊：
影响因子：
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通讯作者：
Andreas Weber
中科院分区：
文献类型：
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作者：
W. Kerler;C. Rebbi;Andreas Weber
我们研究了四维纯紧U(1)晶格规范理论中威尔逊作用补充单极项的相结构。为了克服模拟中相位间跃迁的抑制，我们将单极子耦合作为一个动态变量。我们确定了相图，发现随着单极项权重的增加，一阶跃迁的强度减小，从而最终达到二阶跃迁。在概述了电流线网络的适当拓扑特征之后，我们对发生的单极电流进行了分析，表明相位与拓扑特性有关。
We investigate the phase structure of pure compact U(1) lattice gauge theory in four dimensions with the Wilson action supplemented by a monopole term. To overcome the suppression of transitions between the phase in the simulations we make the monopole coupling a dynamical variable. We determine the phase diagram and find that the strength of the first-order transition decreases with the increasing weight of the monopole term, the transition thus ultimately reaching second order. After outlining the appropriate topological characterization of networks of currents lines, we present an analysis of the occurring monopole currents which shows that the phases are related to topological properties.