  A very famous result of gauge/gravity duality is the universality of the
ratio of shear viscosity to entropy density in every field theory
holographically dual to classical, two-derivative (Einstein) gravity. We
present a way to obtain deviation form this universality by breaking the
rotational symmetry spontaneously. In anisotropic fluids additional shear modes
exist and their corresponding shear viscosities may be non-universal. We
confirm this by explicitly calculating the shear viscosities in a transversely
isotropic background, a p-wave superfluid, and study its critical behavior.
This is a first decisive step towards further applications of gauge/gravity
duality to physical systems.
