arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0709.4630hep-lat
收藏

非零夸克化学势下的畴壁费米子和重叠费米子

Domain-wall and overlap fermions at nonzero quark chemical potential

Jacques Bloch, Tilo Wettig

摘要:

我们最近给出了一个在非零夸克化学势下的重叠狄拉克算符的构造。在这里,我们引入了夸克化学势的畴壁费米子形式主义,并表明,我们以前的结果是复制的,如果第五维的范围是无限大,其晶格间距取为零。我们也将这个结果推广到包含裸夸克质量,考虑其连续极限,并证明了在非零夸克化学势下重叠算符的一些性质。特别是,我们表明,异常和重叠算子的指数之间的关系仍然有效。

英文摘要:

We have recently given a construction of the overlap Dirac operator at nonzero quark chemical potential. Here, we introduce a quark chemical potential in the domain-wall fermion formalism and show that our earlier result is reproduced if the extent of the fifth dimension is taken to infinity and its lattice spacing is taken to zero. We also extend this result to include a bare quark mass, consider its continuum limit, and prove a number of properties of the overlap operator at nonzero quark chemical potential. In particular, we show that the relation between the anomaly and the index of the overlap operator remains valid.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑