Supersymmetric hydrodynamics from the AdS/CFT correspondence
arXiv:0812.0992 · doi:10.1088/1126-6708/2009/02/034
Abstract
We compute holographically the dispersion relation for a hydrodynamic mode of fluctuation (the phonino) of the density of supersymmetry current in N = 4 SYM at strong coupling. The mode appears as a pole at low frequency and momentum in the correlator of supercurrents. It has a wave-like propagation, and we find its speed and coefficient of attenuation.
17 pages