论文标题
剪切流下的二维远程阶
Long-range phase order in two dimensions under shear flow
论文作者
论文摘要
我们从理论上和数值上研究了二维O（2）模型，其中阶参数通过剪切流进行了对比。我们表明，由于剪切流对相波动的异常抑制，远距离阶在两个维度中出现。此外，我们使用有限尺寸的缩放理论来证明从无序状态中的远程有序状态的相变是二阶。在远离平衡的过渡点，关键指数结果接近平衡系统的平均场值。
We theoretically and numerically investigate a two-dimensional O(2) model where an order parameter is convected by shear flow. We show that a long-range phase order emerges in two dimensions as a result of anomalous suppression of phase fluctuations by the shear flow. Furthermore, we use the finite-size scaling theory to demonstrate that a phase transition to the long-range ordered state from the disordered state is second order. At a transition point far from equilibrium, the critical exponents turn out to be close to the mean-field value for equilibrium systems.
