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arXiv 2108.01103hep-thhep-phmath-phmath.MPphysics.class-phphysics.optics
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非线性电动力学的民主拉格朗日方法

Democratic Lagrangians for Nonlinear Electrodynamics

Zhirayr Avetisyan, Oleg Evnin, Karapet Mkrtchyan

摘要:

我们构造了一个拉格朗日一般非线性电动力学的特点,在平等的基础上的电和磁势。在这种拉格朗日的语言中,离散和连续的电磁对偶对称性可以直接施加,导致一个简单的公式与$SO(2)$对偶不变性的理论。当专门的共形不变的情况下,我们的建设提供了一个明显的对偶对称制定最近发现的ModMax理论。我们简要地评论这种方法的自然推广$p$ -形式的$2p+2$尺寸。

英文摘要:

We construct a Lagrangian for general nonlinear electrodynamics that features electric and magnetic potentials on equal footing. In the language of this Lagrangian, discrete and continuous electric-magnetic duality symmetries can be straightforwardly imposed, leading to a simple formulation for theories with the $SO(2)$ duality invariance. When specialized to the conformally invariant case, our construction provides a manifestly duality-symmetric formulation of the recently discovered ModMax theory. We briefly comment on a natural generalization of this approach to $p$-forms in $2p+2$ dimensions.

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