Collision of "metamaterial universes": experimental realization of Minkowski domain wall
arXiv:1201.5348
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.
15 pages, 4 figures, this version is accepted for publication in Physics Letters A
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