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Energy-momentum conservation in pre-metric electrodynamics with magnetic charges | | Gerald Kaiser
; | | Date: |
13 Dec 2003 | | Journal: | J.Phys. A37 (2004) 7163-7168 | | Subject: | Mathematical Physics; Differential Geometry; Optics MSC-class: 31-XX, 35-XX, 78-XX, 83-XX | math-ph hep-th math.DG math.MP physics.optics | | Abstract: | A necessary and sufficient condition for energy-momentum conservation is proved within a topological, pre-metric approach to classical electrodynamics including magnetic as well as electric charges. The extended Lorentz force, consisting of mutual actions by F=(E, B) on the electric current and G=(H, D) on the magnetic current, can be derived from an energy-momentum "potential" if and only if the constitutive relation G=G(F) satisfies a certain vanishing condition. The electric-magnetic reciprocity introduced by Hehl and Obukhov is seen to define a complex structure on the tensor product of 2-form pairs (F,G) which is independent of but consistent with the Hodge star operator defined by any Lorentzian metric. Contrary to a recent claim in the literature, it does not define a complex structure on the space of 2-forms itself. | | Source: | arXiv, math-ph/0401028 | | Services: | Forum | Review | PDF | Favorites | |
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