Selfduality of non-linear electrodynamics with derivative corrections

TL;DR

This paper examines the persistence of electromagnetic duality in non-linear electrodynamics when derivative corrections are included, showing that selfduality holds to all orders in a specific string theory context.

Contribution

It demonstrates that electromagnetic selfduality remains valid to all orders in ' for the four-point function sector of the open string effective action in four dimensions.

Findings

Selfduality preserved to all orders in ' for four-point functions.

Electromagnetic duality survives derivative corrections.

Results applicable to open string effective actions.

Abstract

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.