Anomaly-free SO(5,21) and SO(4,20) G-duality symmetries are proposed to explain the one-loop finiteness of 6D half-maximal supergravities, by analogy with E_{7(7)} in 4D.
Matter Coupled F(4) Gauged Supergravity Lagrangian
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abstract
We construct the so far unknown Lagrangian of D=6, N=2 F(4) Supergravity coupled to an arbitrary number of vector multiplets whose scalars span the coset manifold SO(4,n)/{SO(4) x SO(n)}. This is done first in the ungauged case and then extended to the compact gauging of SU(2) x G, where SU(2) is the R-symmetry diagonal subgroup of SU(2)_L x SU(2)_R = SO(4) and G is a compact subgroup of SO(n), n being the number of vector multiplets, and such that dim G = n. The knowledge of the Lagrangian allows in principle to refine the AdS_6/CFT_5 correspondence already discussed, as far as supersymmetric multiplets are concerned, in a previous related paper. With respect to the latter we also give a more exaustive treatment of the construction of the theory at the level of superspace Bianchi identities and in particular of the scalar potential.
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Anomaly cancellation and one-loop finiteness of 6D half-maximal supergravities
Anomaly-free SO(5,21) and SO(4,20) G-duality symmetries are proposed to explain the one-loop finiteness of 6D half-maximal supergravities, by analogy with E_{7(7)} in 4D.
- Bound states and deconfinement from Romans supergravity with magnetic flux