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Custodial supersymmetry in non-supersymmetric quiver theories

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arxiv hep-th/0204195 v2 pith:OFSKIG4K submitted 2002-04-23 hep-th

classification hep-th
keywords groupquivertheoriescustodialgammagaugenon-supersymmetricsupersymmetry
verification ladder T0 review T1 audit T2 compute T3 formal
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We consider non-supersymmetric quiver theories obtained by orbifolding the N=4 supersymmetric U(K) gauge theory by a discrete Z_\Gamma group embedded in the SU(4) R-symmetry group. We explicitly find that in such theories there are no one-loop quadratic divergences in the effective potential. Moreover, when the gauge group U(n)^\Gamma of the quiver theory is spontaneously broken down to the diagonal U(n), we identify a custodial supersymmetry which is responsible for the fermion-boson degeneracy of the mass spectrum.

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