标题： 带有虚化学势的 SU(3) 复合重加权 显示英文标题

标题： Composite reweighting with Imaginary Chemical Potentials in SU(3)

摘要： 我们回顾格拉斯哥重新加权方法在有限密度QCD中的重叠病理学，并讨论影响构成巨正则配分函数的系综平均逸度多项式展开系数确定的采样偏差。 通过使用不同测度生成的不同规范部分函数之间的自由能差值的期望值被提出作为重新加权方法中与夸克数相关的系统性偏差的指标。 然后将通过使用虚化学势重新加权生成的一系列并行系综构建巨正则配分函数的无偏多项式展开的优势，与通过二次重新加权解决重叠病理学的方法进行对比。 显示英文摘要

摘要： We review the overlap pathology of the Glasgow reweighting method for finite density QCD, and discuss the sampling bias that effects the determination of the ensemble-averaged fugacity polynomial expansion coefficients that form the Grand Canonical Partition function. The expectation of the difference in free energies between canonical partition functions generated with different measures is presented as an indicator of a systematic quark number dependent biasing in the reweighting approach. The advantages of building up an unbiased polynomial expansion for the Grand Canonical Partition function through a series of parallel ensembles generated by reweighting with imaginary chemical potentials are then contrasted with addressing the overlap pathology through a secondary reweighting.