Poynting Theorem, Relativistic Transformation of Total Energy-Momentum and Electromagnetic Energy-Momentum Tensor
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Date
2016
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Publisher
Springer
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Abstract
We address to the Poynting theorem for the bound (velocity-dependent) electromagnetic field, and demonstrate that the standard expressions for the electromagnetic energy flux and related field momentum, in general, come into the contradiction with the relativistic transformation of four-vector of total energy-momentum. We show that this inconsistency stems from the incorrect application of Poynting theorem to a system of discrete point-like charges, when the terms of self-interaction in the product (where the current density and bound electric field are generated by the same source charge) are exogenously omitted. Implementing a transformation of the Poynting theorem to the form, where the terms of self-interaction are eliminated via Maxwell equations and vector calculus in a mathematically rigorous way (Kholmetskii et al., Phys Scr 83:055406, 2011), we obtained a novel expression for field momentum, which is fully compatible with the Lorentz transformation for total energy-momentum. The results obtained are discussed along with the novel expression for the electromagnetic energy-momentum tensor.
Description
Yarman, Tolga/0000-0003-3209-2264
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Keywords
Classical electrodynamics, Electromagnetic energy-momentum tensor, Poynting theorem, Relativistic transformation of energy-momentum
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Citation
3
WoS Q
Q3
Scopus Q
Q2
Source
Volume
46
Issue
2
Start Page
236
End Page
261