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arXiv 0906.1932math-phmath.MP
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Sturmian Schrodinger算子的动力界

Dynamical Bounds for Sturmian Schrödinger Operators

L. Marin

摘要:

斐波那契汉密尔顿算符是一种与黄金平均值相关的准周期斯特米安势相关的薛定谔算子,近年来得到了深入的研究。Damanik和Tcheremchantsev发展了一种方法,并找到了这个模型的非平凡动力学上界。在本文中,我们使用这种方法推广到一个大家庭的Sturmian运营商的动力学上界,并显示在足够大的耦合反常运输的运营商与无理数与一般丢番图条件。作为反例,我们给出了一个病态无理数,它不能证明这个条件,并且它的动力学指数只有弹道上界。此外,我们建立了一个整体的下限的下盒计数维数的频谱,用于获得一个动态的下界有界密度无理数。

英文摘要:

The Fibonacci Hamiltonian, that is a Schrödinger operator associated to a quasiperiodical sturmian potential with respect to the golden mean has been investigated intensively in recent years. Damanik and Tcheremchantsev developed a method and find a non trivial dynamical upper bound for this model. In this paper, we use this method to generalize to a large family of Sturmian operators dynamical upper bounds and show at sufficently large coupling anomalous transport for operators associated to irrational number with a generic diophantine condition. As a counter example, we exhibit a pathological irrational number which do not verify this condition and show its associated dynamic exponent only has ballistic bound. Moreover, we establish a global lower bound for the lower box counting dimension of the spectrum that is used to obtain a dynamical lower bound for bounded density irrational numbers.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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