Selfduality of non-linear electrodynamics with derivative corrections
classification
✦ hep-th
keywords
correctionsderivativeelectrodynamicselectromagneticnon-linearselfdualityactionalpha
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In this paper we investigate how electromagnetic duality survives derivative corrections to classical non-linear electrodynamics. In particular, we establish that electromagnetic selfduality is satisfied to all orders in $\alpha'$ for the four-point function sector of the four dimensional open string effective action.
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