当置于背景磁场中时，电荷是磁偶极子
Electric charge is a magnetic dipole when placed in a background magnetic field
摘要：
由于QED的非线性，我们证明了在强磁场\ $B$ \中的静电荷是一个磁偶极子（同时也是一个电偶极子）。只要$B$保持小于$1.2\cdot 10^{13}\unit{G}$的特征值，其磁矩就随$B$线性增长，但当$B$超过该值时，磁矩趋于恒定。本文估计了中子星的偶极磁场对致密带电体的作用力。
英文摘要：
It is demonstrated, owing to the nonlinearity of QED, that a static charge placed in a strong magnetic field\ $B$\ is a magnetic dipole (besides remaining an electric monopole, as well). Its magnetic moment grows linearly with $B$ as long as the latter remains smaller than the characteristic value of $1.2\cdot 10^{13}\unit{G}$ but tends to a constant as $B$ exceeds that value. The force acting on a densely charged object by the dipole magnetic field of a neutron star is estimated.
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。
