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arXiv 0709.4456hep-lat
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导数夸克源介子谱学

Meson spectroscopy with derivative quark sources

Christof Gattringer, Leonid Ya. Glozman, C. B. Lang, Daniel Mohler, Sasa Prelovsek

摘要:

我们目前的结果得到的质量轻介子的变分方法使用增强基的插值场算子与不同的夸克涂抹。插值构造雅可比涂抹夸克的高斯型,以及从衍生夸克源得到的协变导数作用于高斯源。在我们的分析中,我们使用了具有手征改进夸克的猝灭规范组态和a = 0.148 fm的16^3 x 32晶格上的Luescher-Weisz规范作用量。我们讨论了导数源对与激发态重叠的影响。

英文摘要:

We present results for masses of light mesons obtained with the variational method using an enhanced basis of interpolating field operators with different quark smearings. The interpolators are constructed from Jacobi-smeared quarks of a Gaussian type as well as from derivative quark sources obtained by a covariant derivative acting on the Gaussian sources. For our analysis we use quenched gauge configurations with Chirally Improved quarks and the Luescher-Weisz gauge action on a 16^3 x 32 lattice with a = 0.148 fm. We discuss the influence of derivative sources on the overlap with excited states.

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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