Compact gradient rho-Einstein soliton is isometric to the Euclidean sphere

摘要

In this paper, we have investigated some aspects of gradient rho-Einstein Ricci soliton in a complete Riemannian manifold. First, we have proved that the compact gradient rho-Einstein soliton satisfying some curvature conditions is isometric to the Euclidean sphere by showing that the scalar curvature becomes constant. Second, we have shown that in a non-compact gradient rho-Einstein soliton satisfying an integral condition, the scalar curvature vanishes.