有限密度格点场论的对偶方法
Dual Methods for Lattice Field Theories at Finite Density
摘要：
提出了荷电标量场的配分函数的对偶表示，其中不存在非零化学势下的复作用量问题。在这种双重表示蒙特卡罗模拟是可能的，我们展示了一些物理结果与这种方法。此外，我们提出了一种技术来研究2点函数在有限密度。在不同的化学势的晶格常数的结果显示和讨论。
英文摘要：
We present a dual representation of the partition function of the charged scalar field in which the complex action problem at non-zero chemical potential is absent. In this dual representation Monte Carlo simulations are possible and we show some physical results obtained with this approach. Furthermore we present a technique to study 2-point functions at finite density. Results for the lattice correlators at various chemical potentials are shown and discussed.
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