%X In this paper, we study sign-changing solution of the Choquard type equation ââu + (ÎťV(x) + 1) u = IÎą â |u| 2 |u| 2 Îąâ2u + Âľ|u| pâ2u in R N, where N ⼠3, Îą â ((N â 4) +, N), IÎą is a Riesz potential, p â 2 2N Nâ2 , 2â := N+Îą Nâ2 is the upper critical exponent in terms of the HardyâLittlewoodâSobolev inequality, Âľ > 0, Îť > 0, V â C(RN, R) is nonnegative and has a potential well. By combining the variational methods and sign-changing Nehari manifold, we prove the existence and some properties of ground state sign-changing solution for Îť, Âľ large enough. Further, we verify the asymptotic behaviour of ground state sign-changing solutions as Îť â +â and Âľ â +â, respectivel. %T Ground state sign-changing solutions for critical Choquard equations with steep well potential %L acta78339 %N 54 %O Bibliogr.: p. 17-20. ; ĂśsszefoglalĂĄs angol nyelven %D 2022 %A Li Yong-Yong %A Li Gui-Dong %A Tang Chun-Lei %K Choquard egyenlet