Collision of "metamaterial universes": experimental realization of Minkowski domain wall

TL;DR

This paper demonstrates an experimental electromagnetic analogue of Minkowski domain walls using hyperbolic metamaterials, providing insights into their formation and properties relevant to gravitation theory.

Contribution

It introduces a novel experimental model of Minkowski domain walls using hyperbolic metamaterials, bridging theoretical physics and practical realization.

Findings

Successful creation of electromagnetic analogue of Minkowski domain wall

Analysis of electromagnetic field behavior at the domain wall

Experimental model simulating collision of Minkowski spaces

Abstract

Minkowski domain walls are being actively considered in gravitation theory. They may form during a vacuum phase transition, or as a result of braneworld collision. Despite having interesting physical properties, Minkowski domain walls had remained in the theoretical domain only since their first introduction a few decades ago. Here we demonstrate how to make an electromagnetic analogue of a Minkowski domain wall using hyperbolic metamaterials. We analyze electromagnetic field behavior at the wall, and present a simple experimental model of Minkowski domain wall formation due to collision of two Minkowski spaces.