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arXiv 0710.3467hep-lat
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手征微扰理论在O(a)-改进Wilson夸克2+1味格点量子色动力学中的应用

Application of chiral perturbation theory to 2+1 flavor lattice QCD with O(a)-improved Wilson quarks

CS Collaboration, D. Kadoh, S. Aoki, N. Ishii, K. I. Ishikawa, N. Ishizuka, T. Izubuchi, K. Kanaya, Y. Kuramashi, Y. Namekawa, M. Okawa, K. Sasaki, Y. Taniguchi… 展开作者

CS Collaboration, D. Kadoh, S. Aoki, N. Ishii, K. I. Ishikawa, N. Ishizuka, T. Izubuchi, K. Kanaya, Y. Kuramashi, Y. Namekawa, M. Okawa, K. Sasaki, Y. Taniguchi, A. Ukawa, N. Ukita, T. Yoshie

摘要:

我们将手征微扰理论应用于PACS-CS计划中的赝标介子质量和衰变常数数据,采用O(a)改进的Wilson夸克进行2+1味格点量子色动力学模拟.我们在晶格间距为a=0.09 fm的(2.8 fm)^3盒上,考察了夸克质量范围从m_{ud} =47 MeV到6 MeV的手征夸克的存在性。确定了几个低能常数。我们还讨论了基于手征微扰理论的有限尺寸效应的大小。

英文摘要:

We apply chiral perturbation theory to the pseudoscalar meson mass and decay constant data obtained in the PACS-CS Project toward 2+1 flavor lattice QCD simulations with the O(a)-improved Wilson quarks. We examine the existence of chiral logarithms in the quark mass range from m_{ud}=47 MeV down to 6 MeV on a (2.8 fm)^3 box with the lattice spacing a=0.09 fm. Several low energy constants are determined. We also discuss the magnitude of finite size effects based on chiral perturbation theory.

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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