Global symmetries of Yang-Mills squared in various dimensions
2016
Tensoring two on-shell super Yang-Mills multiplets in dimensions D 10 yields an on-shell supergravity multiplet, possibly with additional matter multiplets. Associating a (direct sum of) division algebra(s) D with each dimension 3 D 10 we obtain formulae for the algebras g and h of the U-duality group G and its maximal compact subgroup H, respectively, in terms of the internal global symmetry algebras of each super Yang-Mills theory. We extend our analysis to include supergravities coupled to an arbitrary number of matter multiplets by allowing for non-supersymmetric multiplets in the tensor product.
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