论文标题
磁铁在广义的出生式电动力学中的光挠度
Deflection of light by magnetars in the generalized Born-Infeld electrodynamics
论文作者
论文摘要
我们研究了广义出生的电动力学中的磁偶极场偏转。使用基于几何光学元件的折射率和轨迹方程的有效索引，我们计算了磁性偶极子赤道上的光的弱弯曲角。在经典式攻击参数无限的极限中，弯曲角度与从Euler-Heisenberg Lagrangian计算出的弯曲角度一致。我们还使用带有磁性偶极子的大物体诱导的有效度量的测量方程计算弯曲角。在无质量的限制中，弯曲角与使用轨迹方程的计算一致。我们将结果应用于磁铁，以估计弯曲角度的数量级。
We study the deflection of light by a magnetic dipole field in the generalized Born-Infeld electrodynamics. Using the effective index of refraction and the trajectory equation based on geometric optics, we compute the weak bending angle of light passing on the equator of the magnetic dipole. In the limit where the classical Born-Infeld parameter is infinite, the bending angle agree with the one computed from the Euler-Heisenberg Lagrangian. We also compute the bending angle using the geodesic equation of the effective metric induced by a massive object with magnetic dipole. In the massless limit the bending angle agrees with the computation using the trajectory equation. We apply the result to magnetars to estimate the order of magnitude for the bending angle.
