标题： 恒定背景下的磁响应来自库仑源 显示英文标题

标题： Magnetic response from constant backgrounds to Coulomb sources

摘要： 无磁荷情况下，真空中充满任意组合的恒定电场和磁场对外加静态电荷的磁线性响应在广义非线性电动力学中被发现。 当电荷为点状且外场平行时，所发现的响应可以解释为一点处存在两个极性相反的点磁荷的场。 表征磁响应和感应电流的系数被专门用于量子电动力学，在这里非线性由海森堡-欧拉有效拉格朗日量确定。 显示英文摘要

摘要： Magnetically uncharged, magnetic linear response of the vacuum filled with arbitrarily combined constant electric and magnetic fields to an imposed static electric charge is found within general nonlinear electrodynamics. When the electric charge is point-like and external fields are parallel, the response found may be interpreted as a field of two point-like magnetic charges of opposite polarity in one point. Coefficients characterizing the magnetic response and induced currents are specialized to Quantum Electrodynamics, where the nonlinearity is taken as that determined by the Heisenberg-Euler effective Lagrangian.