论文标题
非线性真空动力学的退化行为
Degenerate behavior in nonlinear vacuum electrodynamics
论文作者
论文摘要
我们研究了Plebański提出的一阶配方中的非线性真空动力学。我们详细分析了运动方程，并确定了其中一个场分量的时间导数可能出现奇异性的条件。随之而来的退化行为会导致局部自由度数量的减少。我们使用示例模型来说明接近奇异性的场值的静光传播的发生。
We study nonlinear vacuum electrodynamics in the first-order formulation proposed by Plebański. We analyze in detail the equations of motion, and identify conditions for which a singularity can occur for the time derivative of one of the field components. The resulting degenerate behavior can give rise to a shock wave with a reduction of the local number of degrees of freedom. We use an example model to illustrate the occurrence of superluminal propagation for field values approaching the singularity.
