  The Kadomtsev-Petviashvili (KP) nonlinear wave equation is the three
dimensional generalization of the Korteveg-de Vries (KdV) equation. We show how
to obtain the cylindrical KP (cKP) and cartesian KP in relativistic fluid
dynamics. The obtained KP equations describe the evolution of perturbations in
the baryon density in a strongly interacting quark gluon plasma (sQGP) at zero
temperature. We also show the analytical solitary wave solution of the KP
equations in both cases.
