arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1505.01784hep-lathep-thmath-phmath.MP
收藏

双色QCD的Wilson Dirac算子的Dirac谱

Dirac Spectrum of the Wilson Dirac Operator for QCD with Two Colors

Mario Kieburg, Jacobus J. M. Verbaarschot, Savvas Zafeiropoulos

摘要:

本文从手征微扰论的角度研究了在基本表象中费米子和双色量子色动力学中Wilson Dirac算符的晶格赝象。这些影响进行了研究的帮助下,以下的光谱观测:厄米威尔逊狄拉克运营商的水平密度,手征性分布的实际本征值,以及手征凝聚体的淬火和未淬火的理论。我们提供了所有这些量的解析表达式。此外,我们推导出的非厄米威尔逊狄拉克算子的实本征值的水平密度和额外的实模式的数量的限制。后者是一个很好的措施的强度晶格文物。所有的计算结果都通过相应的随机矩阵理论的蒙特卡罗模拟得到了证实,该理论与Wilson费米子双色QCD手征微扰理论相一致。

英文摘要:

We study the lattice artefacts of the Wilson Dirac operator for QCD with two colors and fermions in the fundamental representation from the viewpoint of chiral perturbation theory. These effects are studied with the help of the following spectral observables: the level density of the Hermitian Wilson Dirac operator, the distribution of chirality over the real eigenvalues, and the chiral condensate for the quenched as well as for the unquenched theory. We provide analytical expressions for all these quantities. Moreover we derive constraints for the level density of the real eigenvalues of the non-Hermitian Wilson Dirac operator and the number of additional real modes. The latter is a good measure for the strength of lattice artefacts. All computations are confirmed by Monte Carlo simulations of the corresponding random matrix theory which agrees with chiral perturbation theory of two color QCD with Wilson fermions.

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。

↑