The Covariant Description of Electromagnetically Polarizable Media
T. Dereli, J. Gratus, R. W. Tucker
TL;DR
This paper derives a covariant, relativistic framework for understanding the stress-energy-momentum tensor of electromagnetic fields in complex media, clarifying energy and momentum exchanges.
Contribution
It introduces a first-principles derivation of the stress-energy tensor for electromagnetic fields in inhomogeneous, anisotropic magneto-electric media using a covariant variational approach.
Findings
Provides a consistent relativistic description of electromagnetic stresses in complex media
Clarifies energy-momentum exchange mechanisms in magneto-electric materials
Establishes a theoretical foundation for future experimental and computational studies
Abstract
The form of the phenomenological stress-energy-momentum tensor for the electromagnetic field in a class of inhomogeneous, anisotropic magneto-electric media is calculated from first principles, leading to a coherent understanding of the phenomenological stresses and energy-momentum exchanges induced by electromagnetic interactions with such matter in terms of a fully relativistic covariant variational framework.
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