. ge n - ph ] 1 9 A pr 2 00 7 Local Energy Velocity of Classical Fields Language to be improved
نویسنده
چکیده
It is proposed to apply a recently developed concept of local wave velocities to the dynamical field characteristics, especially for the canonical field energy density. It is shown that local energy velocities can be derived from the lagrangian directly. The local velocities of zeroand firstorder for energy propagation has been obtained for special cases of scalar and vector fields. Some important special cases of these results are discussed.
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