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Scherk–Schwarz mechanism : ウィキペディア英語版 | Scherk–Schwarz mechanism
In theoretical physics, the Scherk–Schwarz mechanism (named after Joël Scherk and John Henry Schwarz) for a field φ basically means that φ is a section of a non-trivializable fiber bundle (not necessarily a vector bundle since φ needn't be linear) which is fixed by the model. This is called a ''twist'' by physicists. Note that this can never occur in a spacetime which is homeomorphic to Rn, which is a contractible space. However, for Kaluza–Klein theories, the Scherk–Schwarz mechanism is a possibility which can't be neglected.
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「Scherk–Schwarz mechanism」の詳細全文を読む
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