中文

量子Chirikov判据:箱中两粒子作为量子气体玩具模型

量子物理 2022-03-15 v4 量子气体 数学物理 math.MP

摘要

我们考虑一个量子多体短程相互作用系统中混沌涌现的玩具模型:箱中的两个一维硬核粒子,以微小质量缺陷作为可积系统(后者由两等质量粒子表示)上的微扰。对该系统,我们应用Chirikov混沌 onset 判据的量子推广,即共振重叠判据。其中,经典非线性共振几乎逐字翻译为量子语言。量子力学在稍后阶段介入:占据少于一个哈密顿本征态的共振被排除出混沌判据。共振表现为低纯度未微扰本征态的连续块,由未破坏态的群分隔——即经典KAM环面的量子类比。

关键词

引用

@article{arxiv.2104.12193,
  title  = {Quantum Chirikov criterion: Two particles in a box as a toy model for a quantum gas},
  author = {Dmitry Yampolsky and N. L. Harshman and Vanja Dunjko and Zaijong Hwang and Maxim Olshanii},
  journal= {arXiv preprint arXiv:2104.12193},
  year   = {2022}
}

备注

Version 3: includes more information about KAM, Chirikov condition, and thermalization; revised introduction, section 2 and conclusion; 16 pages, 6 figures; Version 4: typos corrected and acknowledgements updated