2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/220198We 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 pagesHigh Energy Physics - Theorytext