Journals Information
Universal Journal of Physics and Application Vol. 2(3-4), pp. 295 - 310
Reprint (PDF) (207Kb)
THE ENERGY-MOMENTUM TENSOR IN CLASSICAL FIELD THEORY
AUTHOR(S) INFORMATION: Wyss W.
ABSTRACT
We consider the inhomogeneous Lorentz-group as the fundamental symmetry group of all of physics. For Lorentz invariant actions in classical Lagrange field theories we construct the energy tensor and the energy-momentum tensor. These are intimately related to the generators of the inhomogeneous Lorentz group. With respect to additional symmetry groups of the action, only the physical conservation laws are invariant.