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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 (−1)F ： ウィキペディア英語版 (−1)F In a quantum field theory with fermions, (−1)''F'' is a unitary, Hermitian, involutive operator where F is the fermion number operator and is equal to the sum of the lepton number plus the baryon number, F=B+L, for all particles in the Standard Model. The action of this operator is to multiply bosonic states by 1 and fermionic states by −1. This is always a global internal symmetry of any quantum field theory with fermions and corresponds to a rotation by 2π. This splits the Hilbert space into two superselection sectors. Bosonic operators commute with (−1)''F'' whereas fermionic operators anticommute with it. This operator really shows its utility in supersymmetric theories. Its trace is often a useful computation. ==See also== *Parity (physics) *Primon gas *Möbius function 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「(−1)F」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.