Ricci solitons and concurrent vector fields

Abstract

A Ricci soliton $(M^n,g,v,\lambda )$ on a Riemannian manifold $(M^n,g)$ is said to have concurrent potential field if its potential field $v$ is a concurrent vector field. In the first part of this paper we completely classify Ricci solitons with concurrent potential fields. In the second part we derive a necessary and sufficient condition for a submanifold to be a Ricci soliton in a Riemannian manifold equipped with a concurrent vector field. In the last part, we classify shrinking Ricci solitons with $\lambda =1$ on Euclidean hypersurfaces. Several applications of our results are also presented.

12 pages

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