Variational principle and energy-momentum tensor for relativistic electrodynamics of point charges
Journal Article
·
· Annals of Physics (New York)
- Dipartimento di Fisica, Universita degli Studi di Padova (Italy) and Istituto Nazionale di Fisica Nucleare, Sezione di Padova, Via F. Marzolo, 8, 35131 Padova (Italy)
We give a new representation as tempered distribution for the energy-momentum tensor of a system of charged point-particles, which is free from divergent self-interactions, manifestly Lorentz-invariant and symmetric, and conserved. We present a covariant action for this system, that gives rise to the known Lorentz-Dirac equations for the particles and entails, via Noether theorem, this energy-momentum tensor. Our action is obtained from the standard action for classical electrodynamics, by means of a new Lorentz-invariant regularization procedure, followed by a renormalization. The method introduced here extends naturally to charged p-branes and arbitrary dimensions.
- OSTI ID:
- 20976759
- Journal Information:
- Annals of Physics (New York), Vol. 322, Issue 5; Other Information: DOI: 10.1016/j.aop.2006.07.002; PII: S0003-4916(06)00136-9; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-4916
- Country of Publication:
- United States
- Language:
- English
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