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arXiv 2008.05679math.DS
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分段部分双曲映射平衡态的定量统计稳定性

Quantitative statistical stability for the equilibrium states of piecewise partially hyperbolic maps

Rafael Bilbao, Ricardo Bioni, Rafael Lucena

AI总结:

本文研究分段部分双曲映射的平衡态,利用谱间隙和Hölder正则性证明定量统计稳定性,并给出扰动下不变测度的连续模为O(δ^ζ log δ)。

摘要:

我们考虑一类自同态,它包含一组分段部分双曲动力学,这些动力学半共轭于非一致扩张映射。我们的目标是研究一类保持几乎处处一致压缩叶状结构的自同态,其可能的不连续集平行于压缩方向。我们应用谱间隙性质和其平衡态分解的$\zeta$-Hölder正则性来证明定量统计稳定性陈述。更精确地,在大小为$\delta$的系统确定性扰动下,我们证明$F$-不变测度关于适当各向异性范数连续变化。此外,我们证明对于某些有趣的扰动类别,其连续模为$O(\delta^\zeta\log\delta)$。本文已被《离散与连续动力系统》期刊接受发表。

英文摘要:

We consider a class of endomorphisms that contains a set of piecewise partially hyperbolic dynamics semi-conjugated to non-uniformly expanding maps. Our goal is to study a class of endomorphisms that preserve a foliation that is almost everywhere uniformly contracted, with possible discontinuity sets parallel to the contracting direction. We apply the spectral gap property and the $ζ$-Hölder regularity of the disintegration of its equilibrium states to prove a quantitative statistical stability statement. More precisely, under deterministic perturbations of the system of size $δ$, we show that the $F$-invariant measure varies continuously with respect to a suitable anisotropic norm. Moreover, we prove that for certain interesting classes of perturbations, its modulus of continuity is $O(δ^ζ\log δ)$. This article has been accepted for publication in the Discrete and Continuous Dynamical Systems journal.

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