Noncommutative superspace, N = 1/2 supersymmetry, field theory and string theory

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Abstract

We deform the standard four dimensional N = 1 superspace by making the odd coordinates θ not anticommuting, but satisfying a Clifford algebra. Consistency determines the other commutation relations of the coordinates. In particular, the ordinary spacetime coordinates x cannot commute. We study chiral superfields and vector superfields and their interactions. As in ordinary noncommutative field theory, a change of variables allows us to express the gauge interactions in terms of component fields which are subject to standard gauge transformation laws. Unlike ordinary noncommutative field theories, the change of the lagrangian is a polynomial in the deformation parameter. Despite the deformation, the noncommutative theories still have an antichiral ring with all its usual properties. We show how these theories with precisely this deformation arise in string theory in a graviphoton background. © SISSA/ISAS 2003.

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Seiberg, N. (2003). Noncommutative superspace, N = 1/2 supersymmetry, field theory and string theory. Journal of High Energy Physics, 7(6), 227–243. https://doi.org/10.1088/1126-6708/2003/06/010

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