Energy and Momentum Density in Field Theory
- 15 April 1963
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 130 (2), 800-805
- https://doi.org/10.1103/physrev.130.800
Abstract
It is shown that the energy density commutator condition in its simplest form is valid for interacting spin 0, ½, 1 field systems, but not for higher spin fields. The action principle is extended, for this purpose, to arbitrary coordinate frames. There is a discussion of four categories of fields and some explicit consideration of spin as the simplest example that gives additional terms in the energy density commutator. As the fundamental equation of relativistic quantum field theory, the commutator condition makes explicit the greater physical complexity of higher spin fields.
Keywords
This publication has 3 references indexed in Scilit:
- Commutation Relations and Conservation LawsPhysical Review B, 1963
- Non-Abelian Gauge Fields. Relativistic InvariancePhysical Review B, 1962
- Elektron und Gravitation. IThe European Physical Journal A, 1929