Deconfinement in the two-dimensional XY model.
Deconfinement in the two-dimensional XY model.
复制标题
二维 XY 模型中的解除限制。
DOI：
10.1103/physrevlett.89.035703
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发表时间：
2001
影响因子：
8.6
通讯作者：
H. Fertig
中科院分区：
文献类型：
--
作者：
H. Fertig
研究了磁场中经典二维XY模型的涡旋-反涡对的解束缚问题。单个这样的对通过一串颠倒的自旋连接在一起，从而导致线性限制。我们发现这个系统支持两种相变，一种是闭合弦的扩散，另一种是涡旋的解开。这些转变被证明是相互双重的，而且是非常连续的。讨论了各种系统可能产生的后果。
The unbinding of vortex-antivortex pairs for the classical two-dimensional XY model in a magnetic field is studied. A single such pair is connected by a string of overturned spins, leading to linear confinement. We show that this system supports two phase transitions, one in which closed strings proliferate, and a second in which vortices unbind. The transitions are shown to be dual to one another, and are remarkably continuous. Possible consequences for a variety of systems are discussed.