Spectrum of supersymmetric sound
Lebedev V.V, Smilga A.V.
The propagation velocity of a phonino can be calculated by a purely phenomenological method. The result is Ó = Ρ /å. The disperson law for a phonino and the region in which it exists have been found through a solution of the Bethe-Salpeter equation in the Wess-Zumino model.