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arXiv 1111.4425hep-latnucl-th
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晶格上的自旋极化率

Spin Polarizabilities on the Lattice

Frank X. Lee, Andrei Alexandru

摘要:

自旋极化率提供了弱外部电磁场存在下强子内部结构的信息,并通过康普顿散射实验进行了积极的研究。它们比常规极化率提供更精细的细节,因为它们需要空间和时间变化的场。利用弱场极限中的有效作用量,我们确定了分离自旋为1/2的强子(中性和带电)的每个物理量($μ, α, β, γ_{E1}, γ_{M1}, γ_{E2}, γ_{M2}$)的方法。我们还进行了格点量子色动力学的模拟研究有效作用量方法的可行性。

英文摘要:

Spin polarizabilities provide information on the internal structure of hadrons in the presence of weak external electromagnetic fields, and are actively studied by Compton scattering experiments. They provide finer detail than the regular polarizabilities since they require space and time-varying fields. Using an effective action in the weak field limit, we have identified methods to isolate each of the physical quantities ($μ, α, β, γ_{E1}, γ_{M1}, γ_{E2}, γ_{M2}$) for spin-1/2 hadrons, both neutral and charged. We also perform a lattice QCD simulation to investigate the feasibility of the effective action approach.

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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