Holographic Lifshitz fluids in 1  +  1 dimensions

In this paper, using the techniques of Gauge/gravity duality we explore the hydrodynamic regime of z  =  3 Lifshitz fixed points in 1  +  1 dimensions. The speed of sound in the non relativistic plasma turns out to be $\sqrt{3}$, which clearly violates the conjectured upper bound. We identify this as a natural consequence of the Lorentz symmetry breakdown at z  =  3 Lifshitz fixed point. In our analysis, we compute bulk viscosity to entropy ratio for quantum field theory dual to Lifshitz gravity in 2  +  1 dimensions and it turns out that for this particular holographic model this ratio is above the conjectured lower bound. (paper)