A study of the sign problem for lattice QCD with chemical potential
A study of the sign problem for lattice QCD with chemical potential
复制标题
DOI：
10.1016/j.physletb.2009.11.004
复制
发表时间：
2009-07
影响因子：
4.4
通讯作者：
J. Danzer;C. Gattringer;Ľ. Lipták;M. Marinković
中科院分区：
文献类型：
--
作者：
J. Danzer;C. Gattringer;Ľ. Lipták;M. Marinković
研究了具有化学势的Wilson格点费米子的费米子行列式的相位期望值。我们使用淬火SU（3）系综和实现最近提出的费米子行列式的精确降维。系综在几个温度以下和以上的相变进行了研究，我们分析的夸克质量，温度，体积和拓扑部门的作用。我们比较我们的数值结果预测手征微扰理论。
We study the expectation value of the phase of the fermion determinant for Wilson lattice fermions with chemical potential. We use quenched SU(3) ensembles and implement a recently proposed exact dimensional reduction of the fermion determinant. Ensembles at several temperatures below and above the phase transition are studied and we analyze the role of the quark mass, the temperature, the volume and the topological sectors. We compare our numerical results to predictions from chiral perturbation theory.