Equidistribution of currents under Anosov group actions

Nguyen-Bac Dang; Michael Kapovich; Mikhail Lyubich; Shengyuan Zhao

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arXiv · 2607.22920

Equidistribution of currents under Anosov group actions

Nguyen-Bac Dang·Michael Kapovich·Mikhail Lyubich·Shengyuan Zhao

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Abstract

We study the behavior of currents on flag-manifolds under actions of Anosov subgroups of complex semisimple Lie groups G. Given a current T of bidimension (k, k) on the full flag-manifold F = G/B, we average it under the group action via a construction analogous to the construction of Patterson-Sullivan measures. We show that under certain genericity conditions (in the case of currents of integration over subvarieties), the limiting current is a Gibbs current, i.e. is given by integration (with respect to a Gibbs measure) over the flag-limit set of suitable multiples of currents of integration along Schubert varieties based at the limit points of the group. We prove that the same equidistribution result (but without any genericity assumptions) for currents defined by smooth forms on F. We also prove a form of Axiom A property for the suspension flow of the group action on F.

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Nguyen-Bac Dang, Michael Kapovich, Mikhail Lyubich, Shengyuan Zhao. 2026-07-24. Equidistribution of currents under Anosov group actions. https://arxiv.org/abs/2607.22920

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