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arXiv 2408.07928math.PRmath-phmath.MP
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平坦初始条件下逆伽马聚合物的时间相关性

Time correlations in the inverse-gamma polymer with flat initial condition

Xiao Shen

AI总结:

本文研究正温区域平坦初始条件下逆伽马聚合物的时间相关性,建立时间端点相距较远的两自由能相关性上界,摆脱对Airy过程相关可积概率输入的依赖,可覆盖Airy标度极限无法达到的局部尺度情形。

摘要:

继[Ferr-Spoh'16]中的猜想之后,KPZ普适类中的时间相关性受到了广泛关注。基于零温情形下的先前研究[Basu-Gang-Zhan'21],我们研究了正温区域中平坦初始条件下的时间相关问题。我们的研究聚焦于inverse-gamma polymer(逆伽马聚合物),建立了两个时间端点相距较远的自由能之间相关性的上界。与先前的研究[Basu-Gang-Zhan'21]相比,我们的工作不仅将结果扩展到正温情形,还消除了对与Airy过程相关的可积概率输入的依赖。这一进展使我们能够研究局部尺度:短时间保持固定而长时间任意增长,这是Airy标度极限无法覆盖的情形。

英文摘要:

Temporal correlations in the KPZ universality class have gained significant attention, following the conjectures in [Ferr-Spoh'16]. Building on prior work in the zero temperature setting [Basu-Gang-Zhan'21], we address the time correlation problem with flat initial conditions in the positive temperature regime. Our study focuses on the inverse-gamma polymer, where we establish an upper bound for the correlation between two free energies whose endpoints are far apart in time. In contrast to the previous work [Basu-Gang-Zhan'21], our work not only extends the result to positive temperatures but also eliminates the reliance on integrable probability inputs related to the Airy process. This advancement allows us to address local scales, where the short time remains fixed while the large time grows arbitrarily, a scenario beyond the reach of the Airy scaling limit.

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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