Electromagnetic Boundary Conditions for Space--time Interfaces

Fuente: arXiv
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Autori principali: Gratus, Jonathan, Horsley, Simon A. R., McCall, Martin W.
Natura: Preprint
Pubblicazione: 2025
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author Gratus, Jonathan
Horsley, Simon A. R.
McCall, Martin W.
author_facet Gratus, Jonathan
Horsley, Simon A. R.
McCall, Martin W.
contents We give a general family of electromagnetic boundary conditions applicable to arbitrary space--time interfaces between electromagnetic media, which include the known space--only and time--only boundary conditions as special cases. These boundary conditions describe a broad class of electromagnetic interfaces, including surfaces in arbitrary motion, ultra-thin (metasurface) media, and cases where the media on one or both sides of the boundary can be both spatially and temporally dispersive. Our approach utilizes 4-dimensional spacetime and addresses the question of how, and in what ways, an electromagnetic field may be connected across a 3-dimensional hypersurface. We show that our proposed boundary conditions are the most general conditions consistent with causality and linearity.
format Preprint
id arxiv_https___arxiv_org_abs_2507_05889
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Electromagnetic Boundary Conditions for Space--time Interfaces
Gratus, Jonathan
Horsley, Simon A. R.
McCall, Martin W.
Optics
Classical Physics
We give a general family of electromagnetic boundary conditions applicable to arbitrary space--time interfaces between electromagnetic media, which include the known space--only and time--only boundary conditions as special cases. These boundary conditions describe a broad class of electromagnetic interfaces, including surfaces in arbitrary motion, ultra-thin (metasurface) media, and cases where the media on one or both sides of the boundary can be both spatially and temporally dispersive. Our approach utilizes 4-dimensional spacetime and addresses the question of how, and in what ways, an electromagnetic field may be connected across a 3-dimensional hypersurface. We show that our proposed boundary conditions are the most general conditions consistent with causality and linearity.
title Electromagnetic Boundary Conditions for Space--time Interfaces
topic Optics
Classical Physics
url https://arxiv.org/abs/2507.05889