Annales de l'ENS, 2014, Volume 47, Issue 5, Pages 851–903
Limit Theorems for Horocycle Flows
Alexander Bufetov, Giovanni Forni
The main results of this paper are limit theorems for horocycle flows on compact surfaces of constant negative curvature. One of the main objects of the paper is a special family of horocycle-invariant finitely additive Hölder measures on rectifiable arcs. An asymptotic formula for ergodic integrals for horocycle flows is obtained in terms of the finitely-additive measures, and limit theorems follow as a corollary of the asymptotic formula. The objects and results of this paper are similar to those in , ,  and  for translation flows on flat surfaces. The arguments are based on the representation theory methods developed in  for the classification of invariant distributions, the solution of the cohomological equation and the asymptotics of ergodic averages of horocycle flows.
MSC: 37A17, 60F99
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