On the Energy and Momentum Conservation Laws for Linearized Electromagnetic Fields in a Dispersive Medium
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概要
- 論文の詳細を見る
On the basis of the "small-signal power theorem", a "small-signal momentum theorem" is derived for the linearized electromagnetic fields in electron streams in the presence of a static magnetic field. Expressions for the field momentum, the stress tensor and the momentum dissipation of the linearized electromagnetic fields are obtained. It is proved for a quasimonochromatic wave that the small-signal momentum (or power) theorem can be reduced to the momentum (or energy) conservation law formulated phenomenologically in terms of a reduced permittivity tensor. From this, it is found that the quasi-particles introduced from the phenomenological expression for the field energy have the momentum (or energy) density given by the "small-signal momentum (or power) theorem".
- 社団法人日本物理学会の論文
- 1972-08-05
著者
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Daido Yoshimasa
Department Of Physical Electronics Tokyo Institute Of Technology:(present Address) Fujitsu Laborator
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Agu Masahiro
Department Of Electronics Faculty Of Engineering Ibaraki University
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TAKAGI Toshihiro
Department of Physical Electronics, Tokyo Institute of Technology
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Takagi Toshihiro
Department Of Physical Electronics Tokyo Institute Of Technology
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Agu Masahiro
Department Of Electrical And Electronic Engineering Ibaraki University
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Agu Masahiro
Department of Physical Electronics, Tokyo Institute of Technology
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TAKAGI Toshihiro
Department of Pathology, Atomic Disease Institute, Nagasaki University School of Medicine
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