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Montonen–Olive duality : ウィキペディア英語版 | Montonen–Olive duality In theoretical physics, Montonen–Olive duality is the oldest known example of S-duality or a strong-weak duality. It generalizes the electro-magnetic symmetry of Maxwell's equations. It is named after Finnish Claus Montonen and British David Olive. == Overview == In a four-dimensional Yang-Mills theory with ''N''=4 supersymmetry, which is the case where the Montonen–Olive duality applies, one obtains a physically equivalent theory if one replaces the gauge coupling constant ''g'' by 1/''g''. This also involves an interchange of the electrically charged particles and magnetic monopoles. See also Seiberg duality. In fact, there exists a larger SL(2,Z) symmetry where both ''g'' as well as theta-angle are transformed non-trivially.
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