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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Proca's equations ： ウィキペディア英語版 Proca action In physics, specifically field theory and particle physics, the Proca action describes a massive spin-1 field of mass ''m'' in Minkowski spacetime. The corresponding equation is a relativistic wave equation called the Proca equation.〔Particle Physics (2nd Edition), B.R. Martin, G. Shaw, Manchester Physics, John Wiley & Sons, 2008, ISBN 978-0-470-03294-7〕 The Proca action and equation are named after Romanian physicist Alexandru Proca. This article uses the (+−−−) metric signature and tensor index notation in the language of 4-vectors. ==Lagrangian density== The field involved is the 4-potential ''A''μ = (φ/''c'', A), where φ is the electric potential and A is the magnetic potential. The Lagrangian density is given by: :$\backslash mathcal=-\backslash frac(\backslash partial^\backslash mu\; A^\backslash nu-\backslash partial^\backslash nu\; A^\backslash mu)(\backslash partial\_\backslash mu\; A\_\backslash nu-\backslash partial\_\backslash nu\; A\_\backslash mu)+\backslash fracA^\backslash nu\; A\_\backslash nu.$ where ''c'' is the speed of light, ''ħ'' is the reduced Planck constant, and ∂μ is the 4-gradient. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Proca action」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.