标题： 三维非定域U(1)格点规范理论中的脱禁闭相变 显示英文标题

标题： Deconfinement Phase Transition in a 3D Nonlocal U(1) Lattice Gauge Theory

摘要： 我们引入了一个具有非局域相互作用的三维紧致U(1)格点规范理论，并研究了其相结构。该模型与紧致QED$_3$及铜氧化物的t-J模型等强关联电子系统相关。对于幂律衰减的长程相互作用（模拟无能隙物质场的效果），一个二阶相变发生，将禁闭相和去禁闭相分开。而对于指数衰减的相互作用（模拟有能隙的物质场），系统没有显示出二阶相变的信号。 显示英文摘要

摘要： We introduce a 3D compact U(1) lattice gauge theory having nonlocal interactions in the temporal direction, and study its phase structure. The model is relevant for the compact QED$_3$ and strongly correlated electron systems like the t-J model of cuprates. For a power-law decaying long-range interaction, which simulates the effect of gapless matter fields, a second-order phase transition takes place separating the confinement and deconfinement phases. For an exponentially decaying interaction simulating matter fields with gaps, the system exhibits no signals of a second-order transition.