Probing some N=1 AdS/CFT RG flows

We present the results of probing the ten-dimensional type-IIB super-gravit y solution corresponding to a renormalisation group ow of supersymmetric SU (N) Yang-Mills theory from pure gauge N = 4 to N = 1 with two massless adjo int flavours. The endpoint of the ow is an infrared fixed point theory, and because of this simplicity of the theory, the effective lagrangian for the probe is very well behaved, having no zeros or singularities in the tensio n, and a smooth potential, all of which we exhibit. Specialising to the loc us of points where the potential vanishes, we also characterise a part of t he Coulomb branch of the N = 1 theory. The simplicity of the gauge theory p hysics allows us to isolate and emphasise a key holographic feature of bran e probe physics which has wider applications in the study of geometry/gauge theory duals.