Green currents for holmorphic automorphisms of compact Kahler manifolds

Details Green currents for holmorphic automorphisms of compact Kahler manifolds Green currents for holmorphic automorphisms of compact Kahler manifolds

2003-11-19

arxiv.org/abs/math/0311322v2

Mathematics

Dynamical Systems

30 pages, to appear in J. Amer. Math. Soc

Scientific paper

Let f be a holomorphic automorphism of a compact Kahler manifold (X,\omega) of dimension k>1. We study the convex cones of positive closed (p,p)-currents T_p, which satisfy a functional relation $f^*(T_p)=\lambda T_p, \lambda>1,$ and some regularity condition (PB). Under appropriate assumptions on dynamical degrees we introduce closed finite dimensional cones, not reduced to zero, of such currents. In particular, when the topological entropy h(f) of f is positive, then for some m, there is a positive closed (m,m)-current T_m which satisfies the relation $f^* T_m=\exp(h(f)) T_m$. Moreover,every quasi-p.s.h. function is integrable with respect to the trace measure of T_m. When the dynamical degrees of f are all distinct, we construct an invariant measure $\mu$ as an intersection of closed currents. We show that this measure is mixing and gives no mass to pluripolar sets and to sets of small Hausdorff dimension.

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