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On the Magical Supergravities in Six Dimensions | | M. Gunaydin
; H. Samtleben
; E. Sezgin
; | | Date: |
8 Dec 2010 | | Abstract: | Magical supergravities are a very special class of supergravity theories
whose symmetries and matter content in various dimensions correspond to
symmetries and underlying algebraic structures of the remarkable geometries of
the Magic Square of Freudenthal, Rozenfeld and Tits. These symmetry groups
include the exceptional groups and some of their special subgroups. In this
paper, we study the general gaugings of these theories in six dimensions which
lead to new couplings between vector and tensor fields. We show that in the
absence of hypermultiplet couplings the gauge group is uniquely determined by a
maximal set of commuting translations within the isometry group SO(n_T,1) of
the tensor multiplet sector. Moreover, we find that in general the gauge
algebra allows for central charges that may have nontrivial action on the
hypermultiplet scalars. We determine the new minimal couplings, Yukawa
couplings and the scalar potential. | | Source: | arXiv, 1012.1818 | | Services: | Forum | Review | PDF | Favorites | |
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