The gauging of five-dimensional, N=2 Maxwell-Einstein supergravity theories coupled to tensor multiplets

We study the general gaugings of N = 2 Maxwell-Einstein supergravity theori es (MESGT) in five dimensions, extending and generalizing previous work. Th e global symmetries of these theories are of the form SU(2)(R) x G, where S U(2)(R) is the R-symmetry group of the N = 2 Poincare superalgebra and G is the group of isometries of the scalar manifold that extend to symmetries o f the full action. We first gauge a subgroup K of G by turning some of the vector fields into gauge fields of K while dualizing the remaining vector f ields into tensor fields transforming in a noi-trivial representation of K. Surprisingly, we find that the presence of tensor fields transforming non- trivially under the Yang-Mills gauge group leads to the introduction of a p otential which does not admit an AdS ground state. Next we give the simulta neous gauging of the U(1)(R) subgroup of SU(2)(R) and a subgroup K of G in the presence of K-charged tensor multiplets. The potential introduced by th e simultaneous gauging is the sum of the potentials introduced by gauging K and U(1)(R) separately. We present a list of possible gauge groups K and t he corresponding representations of tensor fields. For the exceptional supe rgravity we find that one can gauge the SO*(6) subgroup of the isometry gro up E6(-26) of the scalar manifold if one dualizes 12 of the vector fields t o tensor fields just as in the gauged N = 8 supergravity. (C) 2000 Elsevier Science B.V. All rights reserved.