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arXiv 1504.01630hep-lat
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重夸克的改进格点费米子action

Improved lattice fermion action for heavy quarks

Yong-Gwi Cho, Shoji Hashimoto, Andreas Jüttner, Takashi Kaneko, Marina Marinkovic, Jun-Ichi Noaki, Justus Tobias Tsang

摘要:

基于布里渊型费米子,我们发展了一种改进的重夸克的格点作用量,它具有良好的能量-动量色散关系。在树级消除了$O(a)$和$O(a^2)$的主要离散化误差。通过计算粲偶素的能量动量色散关系和超精细分裂,我们对这种改进的布里渊费米子作用在淬灭晶格上的作用进行了标度研究。我们提出了一个比较标准的威尔逊费米子和畴壁费米子。

英文摘要:

We develop an improved lattice action for heavy quarks based on Brillouin-type fermions, that have excellent energy-momentum dispersion relation. The leading discretization errors of $O(a)$ and $O(a^2)$ are eliminated at tree-level. We carry out a scaling study of this improved Brillouin fermion action on quenched lattices by calculating the charmonium energy-momentum dispersion relation and hyperfine splitting. We present a comparison to standard Wilson fermions and domain-wall 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。

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