翻訳と辞書 Words near each other ・ Phase conjugation ・ Phase contrast microscopy ・ Phase converter ・ Phase correlation ・ Phase curve ・ Phase curve (astronomy) ・ Phase detector ・ Phase detector characteristic ・ Phase diagram ・ Phase dispersion minimization ・ Phase distinction ・ Phase distortion ・ Phase distortion synthesis ・ Phase Eight ・ Phase Equilibria Diagrams ・ Phase factor ・ Phase field models ・ Phase frequency detector ・ Phase I environmental site assessment ・ Phase II ・ Phase II (album) ・ Phase II Pan Groove ・ Phase III (album) ・ Phase inversion ・ Phase inversion (chemistry) ・ Phase IV ・ Phase IV (album) ・ Phase jitter modulation ・ Phase lag (rotorcraft) ・ Phase line 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 Phase factor ： ウィキペディア英語版 Phase factor For any complex number written in polar form (such as ''r''ei''θ''), the phase factor is the complex exponential factor (ei''θ''). As such, the term "phase factor" is related to the more general term phasor, which may have any magnitude (i.e., not necessarily part of the circle group). The phase factor is a unit complex number, i.e., of absolute value 1. It is commonly used in quantum mechanics. The variable ''θ'' appearing in such an expression is generally referred to as the phase. Multiplying the equation of a plane wave ''A''ei(k·r−''ωt'') by a phase factor shifts the phase of the wave by ''θ'': :$\backslash text^A\backslash text^-\backslash omega\; t\}\backslash right)\}\; =\; A\backslash text^-\backslash omega\; t\; +\; \backslash theta\}\backslash right)\}$. In quantum mechanics, a phase factor is a complex coefficient ei''θ'' that multiplies a ket $|\backslash psi\backslash rangle$ or bra $\backslash langle\backslash phi|$. It does not, in itself, have any physical meaning, since the introduction of a phase factor does not change the expectation values of a Hermitian operator. That is, the values of $\backslash langle\backslash phi|A|\backslash phi\backslash rangle$ and $\backslash langle\backslash phi|e^\; A\; e^|\backslash phi\backslash rangle$ are the same. However, ''differences'' in phase factors between two interacting quantum states can sometimes be measurable (such as in the Berry phase) and this can have important consequences. In optics, the phase factor is an important quantity in the treatment of interference. ==See also== * Berry phase * Bra-ket notation * Euler's formula * Phasor * Plane wave 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「Phase factor」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.