Monopole and quadrupole contributions to the angular momentum density

Monopole and quadrupole contributions to the angular momentum density
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单极子和四极子对角动量密度的贡献

DOI:
10.1016/j.physletb.2019.07.033
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发表时间:
2019
期刊:
影响因子:
4.4
通讯作者:
Tezgin, Kemal
Tezgin, Kemal
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Schweitzer, Peter;Tezgin, Kemal

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能量-动量张量形状因子包含了大量关于核子的信息。通过傅立叶变换将这些信息以3D或2D密度的形式可视化到形状因子中是很有见地的。与角动量分布相关的密度最近被证明接受四极和四极的贡献。我们表明,这两个贡献是唯一相关的。四极贡献可以看作是由四极贡献引起的,并且不包含独立的信息。然而,这两个贡献发挥重要作用的可视化的角动量密度。
The energy-momentum tensor form factors contain a wealth of information about the nucleon. It is insightful to visualize this information in terms of 3D or 2D densities related by Fourier transformations to the form factors. The densities associated with the angular momentum distribution were recently shown to receive monopole and quadrupole contributions. We show that these two contributions are uniquely related to each other. The quadrupole contribution can be viewed as induced by the monopole contribution, and contains no independent information. Both contributions however play important roles for the visualization of the angular momentum density.
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