Diastatic entropy and rigidity of complex hyperbolic manifolds

Mossa R.

2016-01-01

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Abstract

Let f: Y → X be a continuous map between a compact real analytic Kähler manifold (Y, g) and a compact complex hyperbolic manifold (X, g0). In this paper we give a lower bound of the diastatic entropy of (Y, g) in terms of the diastatic entropy of (X, g0) and the degree of f. When the lower bound is attained we get geometric rigidity theorems for the diastatic entropy analogous to the ones obtained by G. Besson, G. Courtois and S. Gallot [2] for the volume entropy. As a corollary, when X = Y, we get that the minimal diastatic entropy is achieved if and only if g is isometric to the hyperbolic metric g0.