On the Significance of the Fields’ Energy-Momentum Tensor

E. Comay *

Charactell Ltd., PO Box 39019, Tel-Aviv, 61390, Israel.

*Author to whom correspondence should be addressed.


This work discusses the significance of the energy-momentum tensor of physical fields of an elementary particle. The Noether theorem shows how this tensor can be derived from the Lagrangian density of a given field. This work proves that the energy-momentum tensor can also be used for a consistency test of a field theory. The results show that the Dirac Lagrangian density of a spin-1/2 massive particle yields consistent results. On the other hand, problems exist with the present structure of quantum electrodynamics, and with quantum fields of massive particles that are described by a second order differential equation. All problematic results are confirmed by an independent analysis.

Keywords: The Energy-Momentum Tensor, The Lagrangian Density, Classical and Quantum Fields, Consistency Test.

How to Cite

Comay, E. (2019). On the Significance of the Fields’ Energy-Momentum Tensor. Physical Science International Journal, 21(4), 1–9. https://doi.org/10.9734/psij/2019/v21i430114


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