期刊
PHYSICA SCRIPTA
卷 96, 期 4, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1402-4896/abe498
关键词
birefringence; unitarity of NED; nonlinear electrodynamics (NED)); Double-Logarithmic electrodynamics
A new model of nonlinear electrodynamics is introduced with a dimensionful parameter beta, breaking dual symmetry and dilatation symmetry. The electric field of a point-like charge is derived for this model, and the static electric energy of a point-like charge is calculated. In the presence of an external magnetic field, the theory demonstrates vacuum birefringence.
A new model of nonlinear electrodynamics is introduced and investigated. The theory carries one dimensionful parameter beta as in Born-Infeld electrodynamics. It is shown that the dual symmetry and dilatation (scale) symmetry are broken in the proposed model. The electric field of a point-like charge is derived for this model, showing that it is non-singular at the origin. Using this electric field, the static electric energy of a point-like charge is calculated. In the presence of an external magnetic field, the theory shows a phenomenon known as vacuum birefringence. The refraction index of two polarizations, parallel and perpendicular to the external magnetic induction field, are calculated. The canonical and symmetrical Belinfante energy-momentum tensors are obtained. Using the causality and unitarity principles, the regions where the theory becomes causal and unitary are found.
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