Sensitivity of energy eigenstates to perturbation in quantum integrable and chaotic systems

• 来源期刊: 理论物理通讯（英文版）
• 年，卷（期）: 2021,（1）
• 所属期刊栏目: QUANTUM PHYSICS AND QUANTUM INFORMATION
• 页码范围: 40-44
• 页数: 5页
• 语种: 英文

摘要

We study the sensitivity of energy eigenstates to small perturbation in quantum integrable and chaotic systems.It is shown that the distribution of rescaled components of perturbed states in unperturbed basis exhibits qualitative difference in these two types of systems:being close to the Gaussian form in quantum chaotic systems,while,far from the Gaussian form in integrable systems.