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本文给出了Born-Infeld电动力学的U1主丛表述,以及检验粒子在Born-Infeld电磁场中的运动方程,检验粒子受到两个力,一个相当于Lorentz力,一个相当于Poincaré压力。A U1-bundle formalism for the Born-Infeld electrodynamics is proposed and the equation of motion for a test particle in the Born-Infeld electromagnetic field is given. There are two forces acting on the test particle, one corresponds to the Lorentz force and the other the Poincaré stress.
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