Mathematics – Dynamical Systems
Scientific paper
2012-02-22
Mathematics
Dynamical Systems
20 pages
Scientific paper
We consider smooth time-changes of the classical horocycle flows on the unit tangent bundle of a compact hyperbolic surface and prove sharp bounds on the rate of equidistribution and the rate of mixing. We then derive results on the spectrum of smooth time-changes and show that the spectrum is absolutely continuous with respect to the Lebesgue measure on the real line and that the maximal spectral type is equivalent to Lebesgue.
Forni Giovanni
Ulcigrai Corinna
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