From KP-I lump solution to travelling waves of Gross-Pitaevskii equation

Yong Liu, Zhengping Wang, Juncheng Wei +1

Let $q(x,y)$ be an nondegenerate lump solution to KP-I (Kadomtsev-Petviashvili-I) equation $$\partial_x^4q-2\sqrt{2}\partial_x^2q-3\sqrt{2}\partial_x((\partial_xq) ^2)-2\partial_y^…