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arXiv 1206.4160math.DS
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可列马氏位移上平衡测度的Bernoulity

Bernoullicity of equilibrium measures on countable Markov shifts

Yair Daon

摘要:

研究了具有可数个状态的双边拓扑马尔可夫转移的平衡行为。我们假设与此转移相关联的潜在的是沃尔特斯有限一阶变分和转移是拓扑传递的。我们证明了系统的平衡测度是Bernoulli到一个周期。在这个过程中,我们推广了几个定理的可数马尔可夫移位。我们证明了一个变分原理和平衡测度的唯一性。关键的一步是证明在双侧移位上具有Walters性质的函数与具有Walters性质的单侧函数是上同调的。然后,我们转向表明,双边CMS的可和变化的功能是上同调的单边功能,也与可和变化。

英文摘要:

We study the equilibrium behaviour of a two-sided topological Markov shift with a countable number of states. We assume the potential associated with this shift is Walters with finite first variation and that the shift is topologically transitive. We show the equilibrium measure of the system is Bernoulli up to a period. In the process we generalize several theorems on countable Markov shifts. We prove a variational principle and the uniqueness of equilibrium measures. A key step is to show that functions with Walters property on a two-sided shift are cohomologous to one-sided functions with the Walters property. Then we turn to show that functions with summable variations on two-sided CMS are cohomologous to one-sided functions, also with summable variations.

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