Kinetic-energy-momentum tensor in electrodynamics

被引:21
|
作者
Sheppard, Cheyenne J. [1 ]
Kemp, Brandon A. [2 ]
机构
[1] Arkansas State Univ, Coll Sci & Math, State Univ, AR 72467 USA
[2] Arkansas State Univ, Coll Engn, State Univ, AR 72467 USA
基金
美国国家科学基金会;
关键词
RADIATION PRESSURE; ELECTROMAGNETIC ENERGY; DIELECTRIC MEDIA; LIGHT; WAVE; MINKOWSKI; BODIES; FIELDS;
D O I
10.1103/PhysRevA.93.013855
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We show that the Einstein-Laub formulation of electrodynamics is invalid since it yields a stress-energy-momentum (SEM) tensor that is not frame invariant. Two leading hypotheses for the kinetic formulation of electrodynamics (Chu and Einstein-Laub) are studied by use of the relativistic principle of virtual power, mathematical modeling, Lagrangian methods, and SEM transformations. The relativistic principle of virtual power is used to demonstrate the field dynamics associated with energy relations within a relativistic framework. Lorentz transformations of the respective SEM tensors demonstrate the relativistic frameworks for each studied formulation. Mathematical modeling of stationary and moving media is used to illustrate the differences and discrepancies of specific proposed kinetic formulations, where energy relations and conservation theorems are employed. Lagrangian methods are utilized to derive the field kinetic Maxwell's equations, which are studied with respect to SEM tensor transforms. Within each analysis, the Einstein-Laub formulation violates special relativity, which invalidates the Einstein-Laub SEM tensor.
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页数:13
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