Nonlinear electrodynamics without birefringence
[摘要] All solutions of the no-birefringence conditions for nonlinear electrodynamics are found. In addition to the known Born-Infeld and Plebanski cases, we find a “reverse Born-Infeld” case, which has a limit to Plebanski, and an “extreme-Born-Infeld” case, which arises as a Lagrangian constraint. Only Born-Infeld has a weak-field limit, and only Born-Infeld and extreme-Born-Infeld avoid superluminal propagation in constant electromagnetic backgrounds, but all cases have a conformal strong-field limit that coincides with the strong-field limit of Born-Infeld found by Bialynicki-Birula.
[发布日期] 2022-12-14 [发布机构]
[效力级别] [学科分类]
[关键词] Field Theories in Higher Dimensions;Brane Dynamics in Gauge Theories;Duality in Gauge Field Theories [时效性]