On a critical Choquard-Kirchhoff p-sub-Laplacian equation in ℍn

This article is devoted to the study of a critical Choquard-Kirchhoff -sub-Laplacian equation on the entire Heisenberg group , where the Kirchhoff function can be zero at zero, i.e., the equation can be degenerate, and involving a nonlinearity, which is critical in the sense of the Hardy-Littlewood-Sobolev inequality. We first establish the concentration-compactness principle for the -sub-Laplacian Choquard equation on the Heisenberg group, and we then prove existence results.