标题： 三维有限温度紧致QED的格点研究 显示英文标题

标题： A lattice study of 3D compact QED at finite temperature

摘要： 我们研究了有限温度下晶格上的3D紧致阿贝尔规范模型中的禁闭相变和单极子性质。 我们预测了在简化模型中，临界耦合常数作为晶格大小的函数。 我们通过数值计算证明了单极子对相变敏感。 在禁闭相中，单极子以磁偶极子的稀薄气体形式出现。 在束缚相中，如果忽略单极子结合，单极子密度和弦张力与半经典估计值不同。 然而，单极子簇的分析显示，带电簇中的弦张力和单极子密度之间的关系与这些预测有合理的吻合。 我们研究了模型两种相中的真空簇结构。 显示英文摘要

摘要： We study the deconfinement phase transition and monopole properties in the finite temperature 3D compact Abelian gauge model on the lattice. We predict the critical coupling as function of the lattice size in a simplified model to describe monopole binding. We demonstrate numerically that the monopoles are sensitive to the transition. In the deconfinement phase the monopoles appear in the form of a dilute gas of magnetic dipoles. In the confinement phase both monopole density and string tension differ from semiclassical estimates if monopole binding is neglected. However, the analysis of the monopole clusters shows that the relation between the string tension and the density of monopoles in charged clusters is in reasonable agreement with those predictions. We study the cluster structure of the vacuum in both phases of the model.