摘要

We consider N = 4 SU(2) circle times U(1) gauged supergravity on asymptotically-AdS(5) backgrounds. By a near-boundary analysis we determine the boundary-dominant components of the bulk fields from their partially gauge-fixed field equations. Subdominant components are projected out in the boundary limit and we find a reduced set of boundary fields, constituting the N = 2 Weyl multiplet. The residual bulk symmetries are found to act on the boundary fields as four-dimensional diffeomorphisms, N = 2 supersymmetry and (super-) Weyl transformations. This shows that the on-shell N = 4 supergravity multiplet yields the N = 2 Weyl multiplet on the boundary with the appropriate local N = 2 superconformal transformations. Building on these results we use the AdS/CFT conjecture to calculate the Weyl anomaly of the dual four-dimensional superconformal field theories in a generic bosonic N = 2 conformal supergravity background.

  • 出版日期2011-6