Baryon interactions from lattice QCD with physical masses -- Overview and $S = 0, -4$ sectors --

Baryon interactions from lattice QCD with physical masses -- Overview and $S = 0, -4$ sectors --
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晶格 QCD 与物理质量的重子相互作用 -- 概述和 $S = 0, -4$ 扇区 --

DOI:
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发表时间:
2017
期刊:
影响因子:
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通讯作者:
K. Sasaki
K. Sasaki
中科院分区:
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文献类型:
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作者:
T. Doi;S. Aoki;S. Gongyo;T. Hatsuda;Y. Ikeda;T. Inoue;T. Iritani;N. Ishii;T. Miyamoto;K. Murano;H. Nemura;K. Sasaki

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用格子QCD研究了核力和超子力。模拟是用(几乎)物理夸克质量进行的,$m_\pi \simeq 146$ MeV和$m_K \simeq 525$ MeV,其中在$(96 a)^4 simeq格点上采用非微扰的${\cal O}(a)$改进的Wilson夸克作用量和Iwasaki规范作用量(8.1\mbox{fm})^4$,$a^{-1} \simeq 2.3$ GeV。在这份报告中,我们给出了理论框架的概述,并提出了两个核子力($S=0$)和两个-$\Xi$力($S=-4 $)的数值结果。在$^1S_0$通道中研究了中心力,在$^3S_1$-$^3D_1$耦合通道分析中得到了中心力和张量力。
Nuclear forces and hyperon forces are studied by lattice QCD. Simulations are performed with (almost) physical quark masses, $m_\pi \simeq 146$ MeV and $m_K \simeq 525$ MeV, where $N_f=2+1$ nonperturbatively ${\cal O}(a)$-improved Wilson quark action with stout smearing and Iwasaki gauge action are employed on the lattice of $(96a)^4 \simeq (8.1\mbox{fm})^4$ with $a^{-1} \simeq 2.3$ GeV. In this report, we give the overview of the theoretical framework and present the numerical results for two-nucleon forces ($S=0$) and two-$\Xi$ forces ($S=-4$). Central forces are studied in $^1S_0$ channel, and central and tensor forces are obtained in $^3S_1$-$^3D_1$ coupled channel analysis.
DOI: 10.1103/physrevc.97.021303
发表时间: 2017-01
期刊: Physical Review C
影响因子: 3.1
作者:
Chris Mcilroy;C. Barbieri;T. Inoue;T. Doi;T. Hatsuda
通讯作者: Chris Mcilroy;C. Barbieri;T. Inoue;T. Doi;T. Hatsuda