Gauge Model in D=3, N=5 Harmonic Superspace
Abstract
We construct the Grassmann-analytic gauge superfields in D=3, N=5 harmonic superspace using the SO(5)/U(1)xU(1) harmonics. These gauge N=5 superfields contain an infinite number of bosonic and fermionic fields arising from decompositions in harmonics and Grassmann coordinates. The bosonic sector of this supermultiplet includes the gauge field Am, the additional nongauge vector field Bm, the scalar field S, two SO(5)-vector scalar fields and an infinite number of auxiliary fields with SO(5) indices. The nonabelian Chern-Simons-type action in the N=5 analytic harmonic superspace is constructed. This action is also invariant with respect to the sixth supersymmetry realized on the N=5 gauge superfields. The component Lagrangian describes the scale-invariant nontrivial interactions of the gauge Chern-Simons field Am with Bm, S and other basic and auxiliary fields. All auxiliary fields can be excluded from this Lagrangian.
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