标题： 调整广义混合蒙特卡罗算法 显示英文标题

标题： Tuning the generalized Hybrid Monte Carlo algorithm

摘要： 我们讨论了对自由场理论应用广义混合蒙特卡洛算法的自相关函数的解析计算，并将结果与二维$O(4)$自旋模型的数值结果进行比较。 我们解释了如何通过调整更新过程中引入的随机性量，将某些算符的动力学临界指数$z$从二降低到一，以及为什么临界减速对于其他算符不是问题。 显示英文摘要

摘要： We discuss the analytic computation of autocorrelation functions for the generalized Hybrid Monte Carlo algorithm applied to free field theory and compare the results with numerical results for the $O(4)$ spin model in two dimensions. We explain how the dynamical critical exponent $z$ for some operators may be reduced from two to one by tuning the amount of randomness introduced by the updating procedure, and why critical slowing down is not a problem for other operators.