论文标题
量子自旋随机方法中的随机变化魏斯田
Time-Evolving Weiss Fields in the Stochastic Approach to Quantum Spins
论文作者
论文摘要
我们通过与随机微分方程的精确映射研究了非平衡量子自旋系统。在高斯噪声的平均值下，此描述是不变的。我们表明，通过明智的选择，可以将实时动态的仿真时间和二维的仿真时间延长。可以动态更新，以减少随机波动的影响。我们讨论了量规-P文献中与漂移计的联系。
We investigate non-equilibrium quantum spin systems via an exact mapping to stochastic differential equations. This description is invariant under a shift in the mean of the Gaussian noise. We show that one can extend the simulation time for real-time dynamics in one and two dimensions by a judicious choice of this shift. This can be updated dynamically in order to reduce the impact of stochastic fluctuations. We discuss the connection to drift gauges in the gauge-P literature.
