翻訳と辞書 Words near each other ・ Path protection ・ Path quality analysis ・ Path Racer ・ Path Solutions ・ Path space ・ Path to the Draft ・ Path to Truth ・ Path to War ・ Path tracing ・ Path Transit ・ Path Valley Railroad ・ Path vector protocol ・ Path Vol. 1 & 2 ・ Path-based strong component algorithm ・ Path-constrained rendezvous ・ Path-ordering ・ PATH400 ・ Patha Bhavan, Kolkata ・ Patha Bhavana ・ Patha Majeru ・ Patha Suryapet ・ Pathaaka ・ Pathadumbara Divisional Secretariat ・ Pathadumbara Electoral District ・ Pathady ・ PathaGollapalle ・ Pathahewaheta Divisional Secretariat ・ Pathak ・ Pathakchak ・ Pathakhera Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Path-ordering ： ウィキペディア英語版 Path-ordering In theoretical physics, path-ordering is the procedure (or a meta-operator $\backslash mathcal\; P$) that orders a product of operators according to the value of a chosen parameter: :$\backslash mathcal\; P\; \backslash left\backslash$ \equiv O_(\sigma_) O_(\sigma_) \cdots O_(\sigma_). Here ''p'' is a permutation that orders the parameters by value: :$p\; \backslash mathrel\; \backslash \; \backslash to\; \backslash$ :$\backslash sigma\_\; \backslash leq\; \backslash sigma\_\; \backslash leq\; \backslash cdots\; \backslash leq\; \backslash sigma\_.$ For example: :$\backslash mathcal\; P\; \backslash left\backslash \; =\; O\_4(1)\; O\_2(2)\; O\_3(3)\; O\_1(4)\; .$ == Examples == If an operator is not simply expressed as a product, but as a function of another operator, we must first perform a Taylor expansion of this function. This is the case of the Wilson loop, which is defined as a path-ordered exponential to guarantee that the Wilson loop encodes the holonomy of the gauge connection. The parameter ''σ'' that determines the ordering is a parameter describing the contour, and because the contour is closed, the Wilson loop must be defined as a trace in order to be gauge-invariant. 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「Path-ordering」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.