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arXiv 1003.5592math.DSnlin.CD
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一般非均匀双曲单峰映射光滑形变的线性响应

Linear response for smooth deformations of generic nonuniformly hyperbolic unimodal maps

Viviane Baladi, Daniel Smania

AI总结:

本文证明缓慢回归的C^4单峰映射族中,绝对连续不变测度对参数可微依赖,并给出Benedicks-Carleson映射不变测度的新表示及扭曲上同调方程的可解性。

摘要:

我们考虑临界点缓慢回归的C^4单峰映射f_t的C^2族,并证明f_t的唯一绝对连续不变测度作为1阶分布对t可微依赖。证明使用塔上的转移算子,其层边界通过光滑截断函数进行平滑处理,以避免人为不连续性。我们给出了Benedicks-Carleson映射f_t的acim的一个新表示,该表示基于单个光滑函数和f_t沿后临界轨道的逆分支。在此过程中,我们证明了若f是Benedicks-Carleson且v对f是水平的,则扭曲上同调方程v(x)=α(f(x))-f'(x)α(x)具有连续解α。在v3中,我们添加了一个包含3条关于微小笔误评论的注释。

英文摘要:

We consider C^2 families of C^4 unimodal maps f_t whose critical point is slowly recurrent, and we show that the unique absolutely continuous invariant measure of f_t depends differentiably on t, as a distribution of order 1. The proof uses transfer operators on towers whose level boundaries are mollified via smooth cutoff functions, in order to avoid artificial discontinuities. We give a new representation of the acim for a Benedicks-Carleson map f_t, in terms of a single smooth function and the inverse branches of f_t along the postcritical orbit. Along the way, we prove that the twisted cohomological equation v(x)=α(f (x)) - f'(x) α(x) has a continuous solution α, if f is Benedicks-Carleson and v is horizontal for f. In v3 we added a note containing 3 comments regarding minor typos.

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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