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arXiv 0807.4039hep-thmath-phmath.MP
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非线性电动力学和扩展超引力中的对偶转动

Duality Rotations in Nonlinear Electrodynamics and in Extended Supergravity

Paolo Aschieri, Sergio Ferrara, Bruno Zumino

摘要:

我们回顾了在四维空间中用磁场交换电场的对偶转动的一般理论。建立了理论具有对偶对称性的充分必要条件。一个非平凡的例子是具有n个交换规范场和Sp(2n,R)自对偶的玻恩-因菲尔德理论。然后,我们回顾超引力理论中的对偶对称性。在N=2的超引力对偶的情况下,旋转一般不是理论的对称性,而是形成理论本身的关键因素。这是由于特殊Kaehler流形的几何和对偶旋转之间的美丽关系。

英文摘要:

We review the general theory of duality rotations which, in four dimensions, exchange electric with magnetic fields. Necessary and sufficient conditions in order for a theory to have duality symmetry are established. A nontrivial example is Born-Infeld theory with n abelian gauge fields and with Sp(2n,R) self-duality. We then review duality symmetry in supergravity theories. In the case of N=2 supergravity duality rotations are in general not a symmetry of the theory but a key ingredient in order to formulate the theory itself. This is due to the beautiful relation between the geometry of special Kaehler manifolds and duality rotations.

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