The electromagnetic energy momentum tensor and its uniqueness

1974 ◽  
Vol 10 (1) ◽  
pp. 59-65 ◽  
Author(s):  
David Lovelock
Keyword(s):  
Energy Momentum Tensor ◽  
Momentum Tensor ◽  
Electromagnetic Energy

Further comments on the equivalence of Abraham's, Minkowski's, and others' electrodynamics

1980 ◽  
Vol 58 (8) ◽  
pp. 1163-1170 ◽  
Author(s):  
Gérard A. Maugin
Keyword(s):  
Energy Density ◽  
Total Energy ◽  
Mechanical Behavior ◽  
Internal Energy ◽  
Closed System ◽  
Ad Hoc ◽  
Energy Momentum Tensor ◽  
Momentum Tensor ◽  
Electromagnetic Energy ◽  
Time Decomposition

Arguments recently proposed by Kranyš concerning the nondistinguishability between Abraham's and Minkowski's electromagnetic contributions to the total energy-momentum tensor of the same relativistic, thermodynamically closed system are extended to other electromagnetic energy-momentum tensors (as proposed by Grot and Eringen and de Groot and Suttorp). The adjustment of the corresponding "matter" contribution, which occurs in each element of the canonical space-time decomposition of the total energy-momentum tensor, is exhibited in those different cases. For dissipation-free systems this adjustment can be achieved for each case by means of an ad hoc Legendre transformation on the internal energy density. The arguments used do not presuppose any isotropy and linearity of the medium and can be readily extended to the cases of media with hysteresis and media endowed with intrinsic spins, be they of a fluid-like or solid-like type of mechanical behavior.

4/3 problem, Poynting theorem, and electromagnetic energy–momentum tensor

2015 ◽  
Vol 93 (6) ◽  
pp. 691-697 ◽  
Author(s):  
Alexander L. Kholmetskii ◽  
Oleg V. Missevitch ◽  
Tolga Yarman
Keyword(s):  
Energy Momentum Tensor ◽  
Momentum Tensor ◽  
Electromagnetic Energy ◽  
Poynting Theorem

scholarly journals ELECTROMAGNETIC CASIMIR EFFECT IN WEDGE GEOMETRY AND THE ENERGY-MOMENTUM TENSOR IN MEDIA

2010 ◽  
Vol 25 (11) ◽  
pp. 2270-2278 ◽  
Author(s):  
I. BREVIK ◽  
S. Å. ELLINGSEN ◽  
K. A. MILTON
Keyword(s):  
Temperature Dependence ◽  
Energy Momentum Tensor ◽  
Casimir Effect ◽  
Casimir Energy ◽  
Momentum Tensor ◽  
Electromagnetic Energy ◽  
Perfect Conductor ◽  
Speed Of Light ◽  
Circular Arc

The wedge geometry closed by a circular-cylindrical arc is a nontrivial generalization of the cylinder, which may have various applications. If the radial boundaries are not perfect conductors, the angular eigenvalues are only implicitly determined. When the speed of light is the same on both sides of the wedge, the Casimir energy is finite, unlike the case of a perfect conductor, where there is a divergence associated with the corners where the radial planes meet the circular arc. We advance the study of this system by reporting results on the temperature dependence for the conducting situation. We also discuss the appropriate choice of the electromagnetic energy-momentum tensor.

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