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arXiv 0810.1360hep-lat
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具有$N_f=2+1$动力学重叠费米子的轻介子谱

Light meson spectrum with $N_f=2+1$ dynamical overlap fermions

J. Noaki, S. Aoki, T. W. Chiu, H. Fukaya, S. Hashimoto, T. H. Hsieh, T. Kaneko, H. Matsufuru, T. Onogi, E. Shintani, N. Yamada

摘要:

我们报道了一个具有2+1动力学味的重叠费米子的数值模拟。我们计算了$16^3\times 48 \times (0.11 {\rm fm})^4$格点上五种不同的上夸克质量、下夸克质量和两种奇异夸克质量下的赝标质量和衰变常数。最轻的π介子质量相当于$\approx 310$ MeV。我们还研究了手征微扰理论的有效性与两种动力学味的数值模拟结果,并得出结论,单圈公式不能直接应用于奇异夸克质量区。因此,我们外推我们的2+1-风味的结果,手征极限的手征微扰理论的双环公式拟合的数据。

英文摘要:

We report on a numerical simulation with 2+1 dynamical flavors of overlap fermions. We calculate pseudo-scalar masses and decay constants on a $16^3\times 48 \times (0.11 {\rm fm})^4$ lattice at five different up and down quark masses and two strange quark masses. The lightest pion mass corresponds to $\approx 310$ MeV. We also study the validity of the chiral perturbation theory using the results of the numerical simulation with two dynamical flavors and conclude that the one-loop formulae cannot be directly applied in the strange quark mass region. We therefore extrapolate our 2+1-flavor results to the chiral limit by fitting the data to the two-loop formulae of the 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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