The sign of the dipole?dipole potential by axion exchange
The sign of the dipole?dipole potential by axion exchange
复制标题
偶极子的符号？轴子交换的偶极势
DOI：
10.1016/j.physletb.2017.06.027
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发表时间：
2017
影响因子：
4.4
通讯作者：
Takahashi Fuminobu
中科院分区：
文献类型：
--
作者：
Daido Ryuji;Takahashi Fuminobu
我们计算由光赝标量轴子介导的费米子之间的偶极-偶极势，特别注意整体符号。虽然势的符号是物理的，并且对于发现或约束轴子与费米子耦合的实验很重要，但文献中经常存在符号错误。这篇简短说明的目的是澄清轴子介导的偶极-偶极势的符号问题。作为副产品，我们发现由于介导粒子的自旋不同而导致偶极-偶极势的符号变化。
We calculate a dipole–dipole potential between fermions mediated by a light pseudoscalar, axion, paying a particular attention to the overall sign. While the sign of the potential is physical and important for experiments to discover or constrain the axion coupling to fermions, there is often a sign error in the literature. The purpose of this short note is to clarify the sign issue of the axion-mediated dipole–dipole potential. As a by-product, we find a sign change of the dipole–dipole potenital due to the different spin of the mediating particle.