Maximizing measures for partially hyperbolic systems with compact center leaves

Details Maximizing measures for partially hyperbolic systems with compact center leaves Maximizing measures for partially hyperbolic systems with compact center leaves

2010-10-16

arxiv.org/abs/1010.3372v1

Mathematics

Dynamical Systems

Scientific paper

We obtain the following dichotomy for accessible partially hyperbolic diffeomorphisms of 3-dimensional manifolds having compact center leaves: either there is a unique entropy maximizing measure, this measure has the Bernoulli property and its center Lyapunov exponent is 0 or, there is a finite number of entropy maximizing measures, all of them with nonzero center Lyapunov exponent (at least one with negative exponent and one with positive exponent), that are finite extensions of a Bernoulli system. In the first case of the dichotomy we obtain that the system is topologically conjugated to a rotation extension of a hyperbolic system. This implies that the second case of the dichotomy holds for an open and dense set of diffeomorphisms in the hypothesis of our result. As a consequence we obtain an open set of topologically mixing diffeomorphisms having more than one entropy maximizing measure.

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