Born-Infeld Corrections to D3 brane Action in $AdS_5\times S_5$ and N=4, d=4 Primary Superfields

We consider certain supersymmetric Born-Infeld couplings to the D3 brane action and show that they give rise to massless and massive KK excitations of type IIB on $AdS_5\times S_5$, in terms of singleton Yang-Mills superfields.