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arXiv 1006.4491math.DSmath.DGmath.FA
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最优输运与作用于测度的扩张圆映射的动力学

Optimal transport and dynamics of expanding circle maps acting on measures

Benoit Kloeckner

摘要:

利用最优输运研究了作用于测度的扩张圆映射的推进动力学性质。利用Gigli给出的测度空间的切空间的定义,计算了它们在唯一绝对连续不变测度上的导数.特别是它表明,1是一个本征值的无穷重数,使不变测度承认许多变形成近不变的。因此,我们得到反例的一个无穷小版本的Furstenberg猜想。我们还证明了该作用具有正的度量平均维数关于Wasserstein度量。

英文摘要:

Using optimal transport we study some dynamical properties of expanding circle maps acting on measures by push-forward. Using the definition of the tangent space to the space of measures introduced by Gigli, their derivative at the unique absolutely continuous invariant measure is computed. In particular it is shown that 1 is an eigenvalue of infinite multiplicity, so that the invariant measure admits many deformations into nearly invariant ones. As a consequence, we obtain counter-examples to an infinitesimal version of Furstenberg's conjecture. We also prove that this action has positive metric mean dimension with respect to the Wasserstein metric.

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