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arxiv: 0804.2907 · v1 · pith:ZW2ACUCEnew · submitted 2008-04-17 · ✦ hep-th

Janus Configurations, Chern-Simons Couplings, And The Theta-Angle in N=4 Super Yang-Mills Theory

Davide Gaiotto , Edward Witten This is my paper
classification ✦ hep-th
keywords theta-anglechern-simonscloselyexistencefour-dimensionaljanusrelatedsuper
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We generalize the half-BPS Janus configuration of four-dimensional N=4 super Yang-Mills theory to allow the theta-angle, as well as the gauge coupling, to vary with position. We show that the existence of this generalization is closely related to the existence of novel three-dimensional Chern-Simons theories with N=4 supersymmetry. Another closely related problem, which we also elucidate, is the D3-NS5 system in the presence of a four-dimensional theta-angle.

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