A new off-shell 8+8 scalar-tensor multiplet for N=2 conformal supergravity is constructed by supersymmetric truncation of N=3 multiplets and elimination of central charge multiplet fields using hypermultiplet field equations.
N=2 Supersymmetric Scalar-Tensor Couplings
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abstract
We determine the general coupling of a system of scalars and antisymmetric tensors, with at most two derivatives and undeformed gauge transformations, for both rigid and local N=2 supersymmetry in four-dimensional spacetime. Our results cover interactions of hyper, tensor and double-tensor multiplets and apply among others to Calabi-Yau threefold compactifications of Type II supergravities. As an example, we give the complete Lagrangian and supersymmetry transformation rules of the double-tensor multiplet dual to the universal hypermultiplet.
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Scalar-Tensor multiplet in four dimensional N=2 conformal supergravity
A new off-shell 8+8 scalar-tensor multiplet for N=2 conformal supergravity is constructed by supersymmetric truncation of N=3 multiplets and elimination of central charge multiplet fields using hypermultiplet field equations.