Abstract
We study the Ricci curvature of a Riemannian metric as a differential operator acting on the space of metrics close (in a weighted functional spaces topology) to the standard metric of a rank-one noncompact symmetric space. We prove that any symmetric bilinear field close enough to the standard may be realized as the Ricci curvature of a unique close metric if its decay rate at infinity (its weight) belongs to some precisely known interval. We also study what happens if the decay rate is too small or too large.
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Delay, E., Herzlich, M. Ricci curvature in the neighborhood of rank-one symmetric spaces. J Geom Anal 11, 573–588 (2001). https://doi.org/10.1007/BF02930755
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DOI: https://doi.org/10.1007/BF02930755