Upper and lower bounds for the first eigenvalue and the volume entropy   of noncompact K\"ahler manifolds
  We find upper and lower bounds for the first eigenvalue and the volume entropy of a noncompact real analytic K\"ahler manifold, in terms of Calabi's diastasis function and diastatic entropy, which are sharp in the case of the complex hyperbolic space. As a corollary we obtain explicit lower bounds for the first eigenvalue of the geodesic balls of an Hermitian symmetric space of noncompact type. 
Roberto Mossa
math.DG math.CV math.SP