We present a variational formulation of electrodynamics using de Rham even and odd differential forms. Our formulation relies on a variational principle more complete than the Hamilton principle and thus leads to. field equations with external sources and permits the derivation of the constitutive relations. We interpret a domain in space-time as an odd de Rham 4-current. This permits a treatment of different types of boundary problems in an unified way. In particular we obtain a smooth transition to the infinitesimal version by using a current with a one point support.
|Titolo:||A VARIATIONAL FORMULATION OF ELECTRODYNAMICS WITH EXTERNAL SOURCES|
|Data di pubblicazione:||2009|
|Appare nelle tipologie:||1.1.2 Articolo su rivista con ISSN|