Born-Infeld Axion-Dilaton Electrodynamics and Electromagnetic Confinement

TL;DR

This paper extends Born-Infeld electrodynamics to include axion and dilaton fields, exploring their effects on electromagnetic confinement and revealing potential bound states with confined electric flux.

Contribution

It introduces a generalized Born-Infeld model with axion and dilaton couplings based on electromagnetic duality and SL(2,R) symmetry, and investigates its static solutions.

Findings

Existence of axion-dilaton bound states with confined electric flux.

Model reduces to Maxwell and original Born-Infeld theories in appropriate limits.

Numerical evidence supports electromagnetic confinement phenomena.

Abstract

A generalization of Born-Infeld non-linear vacuum electrodynamics involving axion and dilaton fields is constructed with couplings dictated by electromagnetic duality and SL(2,R) symmetries in the weak field limit. Besides the Newtonian gravitational constant the model contains a single fundamental coupling parameter b0. In the absence of axion and dilaton interactions it reduces, in the limit as b0 tends to infinity, to Maxwell's linear vacuum theory while for finite b0 it reduces to the original Born-Infeld model. The spherically symmetric static sector of the theory is explored in a background Minkowski spacetime where numerical evidence suggests the existence of axion-dilaton bound states possessing confined electric flux.