论文标题
具有弱相互作用的二维非平衡激子孔子系统的时空尺度
Spatiotemporal scaling of two-dimensional nonequilibrium exciton-polariton systems with weak interactions
论文作者
论文摘要
我们对基于随机概括的GROSS-PITAEVSKII方程驱动的二维非平衡的激子 - 核酸系统进行了数值研究。我们计算密度波动，相干函数和缩放函数。发现短范围的相关性与Bogoliubov线性理论一致。虽然在较大距离处，但静态和动态相关性的特征是Kardar-Parisi-Zhang（KPZ）通用类别的非线性缩放行为，尤其是当相互作用较弱时。在此制度中，缩放分析对于捕获通用KPZ缩放特征至关重要。另外，在强大的KPZ方案中修改了涡流之间的相互作用，并导致复杂的非平衡涡流模式。
We perform a numerical study on the two-dimensional nonequilibrium exciton-polariton systems driven by incoherent pumping based on the stochastic generalized Gross-Pitaevskii equation. We calculate the density fluctuation, coherence function, and scaling function. It is found that the correlations at short range agree with the Bogoliubov linear theory. While at large distance, both static and dynamic correlations are characterized by the nonlinear scaling behaviors of Kardar-Parisi-Zhang (KPZ) universality class, especially when the interaction is weak. In this regime, scaling analyses are crucial to capture the universal KPZ scaling features. In addition, the interaction between vortices is modified in the strong KPZ regime and leads to complex nonequilibrium vortex patterns.
