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arXiv 1508.00892hep-lat
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格点量子色动力学中轻核的磁性

Magnetic properties of light nuclei from lattice QCD

Martin J. Savage

摘要:

在简要回顾了格点量子色动力学的方法和技术之后,我总结了最近的结果,格点量子色动力学计算核子和轻核与磁场的相互作用在介子质量为805 MeV和450 MeV。有趣的是,磁矩被发现是与实验值一致时,给出的天然核磁子。计算了$np\rightarrow dγ$的极低能截面,发现与实验测量结果一致。首先计算了轻核的磁极化率,在这些较重的π介子质量的核子中观察到大的等矢量极化率。

英文摘要:

After a short review of Lattice QCD methodology and techniques, I summarize recent results of Lattice QCD calculations of the interactions of nucleons and light nuclei with magnetic fields at pion masses of 805 MeV and 450 MeV. Interestingly, the magnetic moments are found to be consistent with the experimental values when given in terms of natural nuclear magnetons. The very low-energy cross section for $np\rightarrow dγ$ is calculated and found to agree with the experimental measurement. First calculations of the magnetic polarizabilities of light nuclei are presented, with a large isovector polarizability observed for the nucleon at these heavier pion masses.

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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