The shear viscosity of the non-commutative plasma

We compute the shear viscosity of the non-commutative N = 4 super Yang-Mills quantum field theory at strong coupling us in g the dual supergravity background. Special interest derives fro m the fact that the background presents an intrinsic anisotropy in space through the distinction of commutative and non-commutative directions. Despite this anisotropy the analysis exhibits the ubiquitous result eta/s = 1/4 pi for two different shear channels. In order to derive this result, we show that the boundary energy momentum tensor must couple to the open string metric. As a byproduct we compute the renormalised holographic energy momentum tensor and show that it coincides with one in the commutative theory.