Supersymmetric hydrodynamics from the AdS/CFT correspondence

Understand

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.