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arXiv 2407.02577hep-th
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自对偶非线性电动力学的对偶性

Dualities of Self-Dual Nonlinear Electrodynamics

Jorge G. Russo, Paul K. Townsend

AI总结:

本研究针对自对偶因果非线性电动力学理论,推导了拉格朗日与哈密顿密度的对偶关系,探讨了玻恩勒让德自对偶性及新Φ宇称对偶性的意义,并用多例加以验证。

摘要:

对于任意具有“自对偶”(即电磁U(1)对偶不变性)的因果非线性电动力学理论,拉格朗日密度与哈密顿密度的勒让德对偶对{ℒ,ℋ},由正实数集R⁺上与粒子力学拉格朗日量、哈密顿量相关的函数{ℓ,h}构造而来。我们证明了联系ℓ与h的一种“对偶性”,可推导出ℒ与ℋ通过恰当变量对之间的简单映射相关联。我们还讨论了玻恩的“勒让德自对偶性”以及新的“Φ宇称”对偶性的意义,并通过多个示例阐释了我们的结果。

英文摘要:

For any causal nonlinear electrodynamics theory that is "self-dual" (electromagnetic $U(1)$-duality invariant), the Legendre-dual pair of Lagrangian and Hamiltonian densities $\{\mathcal{L},\mathcal{H}\}$ are constructed from functions $\{\ell,h\}$ on ${\bf R}^+$ related to a particle-mechanics Lagrangian and Hamiltonian. We show how a `duality' relating $\ell$ to $h$ implies that $\mathcal{L}$ and $\mathcal{H}$ are related by a simple map between appropriate pairs of variables. We also discuss Born's "Legendre self-duality" and implications of a new "$Φ$-parity" duality. Our results are illustrated with many examples.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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