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Invariants, Projection Operators and $SU(N)\times SU(N)$ Irreducible Schwinger Bosons (1108.5246v1)
Published 26 Aug 2011 in math-ph and math.MP
Abstract: We exploit SU(N) Schwinger bosons to construct and analyze the coupled irreducible representations of $SU(N) \times SU(N)$ in terms of the invariant group. The corresponding projection operators are constructed in terms of the invariant group generators. We also construct $SU(N) \times SU(N)$ irreducible Schwinger bosons which directly create these coupled irreducible states. The SU(N) Clebsch Gordan coefficients are computed as the matrix elements of the projection operators.
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