certain results on n(k)−contact metric manifolds and torse-forming vector fields

In this paper, we study n(k)−contact metric manifolds endowed with a torse-forming vector field and give some characterizations for such manifolds. then, we deal with n(k)−contact metric manifolds admitting a ricci soliton and find that the potential vector field v of the ricci soliton is a constant multiple of ξ. also, we obtain a necessary condition for a torse-forming vector field to be recurrent and killing on m.