A lower bound for the scalar curvature of noncompact nonflat Ricci   shrinkers
  We show that recent work of Ni and Wilking yields the result that a noncompact nonflat Ricci shrinker has at most quadratic scalar curvature decay. The examples of noncompact K\"{a}hler--Ricci shrinkers by Feldman, Ilmanen, and Knopf exhibit that this result is sharp. 
Bennett Chow, Peng Lu, and Bo Yang
math.DG