QCD at nonzero density and canonical partition functions with Wilson fermions
QCD at nonzero density and canonical partition functions with Wilson fermions
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DOI：
10.1103/physrevd.83.034502
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发表时间：
2011-02-11
影响因子：
5
通讯作者：
Wenger, Urs
中科院分区：
文献类型：
--
作者：
Alexandru, Andrei;Wenger, Urs
本文提出了一种化学势为非零的Wilson-Dirac费米子的约化方法，该方法产生了一个维数约化的费米子矩阵。减少费米子矩阵的大小是独立的时间晶格的程度和依赖于化学势的因素。因此，减少矩阵允许一个简单的评估威尔逊费米子行列式的任何值的化学势，因此准确的投影到正则配分函数。
We present a reduction method for Wilson-Dirac fermions with nonzero chemical potential which generates a dimensionally reduced fermion matrix. The size of the reduced fermion matrix is independent of the temporal lattice extent and the dependence on the chemical potential is factored out. As a consequence the reduced matrix allows a simple evaluation of the Wilson fermion determinant for any value of the chemical potential and hence the exact projection to the canonical partition functions.