Light wave propagation through a dilaton-Maxwell domain wall

TL;DR

This paper investigates electromagnetic wave propagation through a theoretical dilaton-Maxwell domain wall, concluding such walls are unlikely to exist in our universe due to physical constraints and observational inconsistencies.

Contribution

It provides an analysis of wave behavior in dilaton-Maxwell domain walls and assesses their physical plausibility within our universe.

Findings

Such walls would need to be unreasonably thick or have excessively strong magnetic fields.

The existence of these walls is highly improbable given current observations.

The study constrains the physical properties of hypothetical dilaton-Maxwell domain walls.

Abstract

We consider the propagation of electromagnetic waves through a dilaton-Maxwell domain wall of the type introduced by Gibbons and Wells [G.W. Gibbons and C.G. Wells, Class. Quant. Grav. 11, 2499-2506 (1994)]. It is found that if such a wall exists within our observable universe, it would be absurdly thick, or else have a magnetic field in its core which is much stronger than observed intergalactic fields. We conclude that it is highly improbable that any such wall is physically realized.