Super Yang-Mills operators from the D3-brane action in a curved background

A consistent truncation of IIB on S-5 has been obtained in the sector of th e metric and the 4-form potential. The ansatz contains 20 scalars and all 1 5 gauge fields of N = 8 gauged supergravity in five dimensions. With this f ully non-linear ansatz, the calculations for n-point correlators of super Y ang-Mills (SYM) theory via AdS/CFT are simpler than those in the literature that use the linear ansatz followed by non-lineal field redefinitions. We work out the SYM operators that couple to the scalars by expanding the Dira c-Born-Infeld (DBI) action plus Wess-Zumino (WZ) terms around an AdS(5) x S -5 background with the metric fluctuations. The resulting operators agree w ith those based on a superconformal symmetry argument. We discuss the signi ficance of our results. (C) 2001 Published by Elsevier Science B.V.