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arXiv 1202.1867hep-lat
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具有味相关质量项的交错夸克的数值性质

Numerical properties of staggered quarks with a taste-dependent mass term

Philippe de Forcrand, Aleksi Kurkela, Marco Panero

摘要:

本文比较了Adams [1,2]和Hoelbling [3]提出的具有味依赖质量项的交错Dirac算子与普通交错Dirac算子和Wilson Dirac算子的数值性质。在自由极限和(淬火)相互作用的配置,我们考虑他们的拓扑性质,他们的频谱,和由此产生的π质量。虽然我们也考虑了频谱结构,拓扑性质,局部性和计算成本的重叠算子交错的内核,我们呼吁注意使用亚当斯和Hoelbling运营商没有重叠建设的可能性。特别是,Hoelbling算子可以用来模拟两种简并的味道,而不需要加性质量重整化,因此不需要手征极限的微调。

英文摘要:

The numerical properties of staggered Dirac operators with a taste-dependent mass term proposed by Adams [1,2] and by Hoelbling [3] are compared with those of ordinary staggered and Wilson Dirac operators. In the free limit and on (quenched) interacting configurations, we consider their topological properties, their spectrum, and the resulting pion mass. Although we also consider the spectral structure, topological properties, locality, and computational cost of an overlap operator with a staggered kernel, we call attention to the possibility of using the Adams and Hoelbling operators without the overlap construction. In particular, the Hoelbling operator could be used to simulate two degenerate flavors without additive mass renormalization, and thus without fine-tuning in the chiral limit.

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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