“…We can learn more details about physical background from [2,3] and the references therein. System (1.2) has been extensively studied, focusing on the existence of positive solutions, multiplicity of solutions, ground state solutions, sign-changing solutions, radial solutions, by using the variational methods and critical point theory under various assumptions of potential V and nonlocal term f , see for example [4][5][6][7][8][9][10][11][12][13][14][15][16][17] and the references therein. In addition, existence and multiplicity of the Schrödinger-Poisson problem in a bounded domain has been paid attention to by many authors, we can see [18][19][20][21][22][23][24].…”