New electromagnetic conservation laws

Bergqvist, Göran (author): Linköpings universitet,Tillämpad matematik,Tekniska högskolan

Eriksson, Ingemar (author): Linköpings universitet,Tillämpad matematik,Tekniska högskolan

Senovilla, J. M. M. (author): Departamento de Física Teórica, Universidad del País Vasco, Bilbao, Spain

(creator_code:org_t)

2003-05-29
2003
English.
In: Classical and Quantum Gravity. - : IOP Publishing. - 0264-9381 .- 1361-6382. ; 20:13, s. 2663-2668

Related links:: http://urn.kb.se/res...; show more...; http://arxiv.org/pdf...; https://urn.kb.se/re...; https://doi.org/10.1...; show less...

Abstract Subject headings

The Chevreton superenergy tensor was introduced in 1964 as a counterpart, for electromagnetic fields, of the well-known Bel–Robinson tensor of the gravitational field. We here prove the unnoticed facts that, in the absence of electromagnetic currents, Chevreton's tensor (i) is completely symmetric, and (ii) has a trace-free divergence if the Einstein–Maxwell equations hold. It follows that the trace of the Chevreton tensor is a rank-2, symmetric, trace-free, conserved tensor, which is different from the energy–momentum tensor, and nonetheless can be constructed for any test Maxwell field or any Einstein–Maxwell spacetime.

By the author/editor: Bergqvist, Göran; Eriksson, Ingema ...; Senovilla, J. M. ...

About the subject

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