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Quantum Lyapunov exponents and complex spacing ratios: Two measures of dissipative quantum chaos

2021/12/31 by Igor Yusipov, I. I. Yusipov, M. V. Ivanchenko +1 · 1 citation
Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Quantum Mechanics and Applications #Spectroscopy and Quantum Chemical Studies

paper · doi:10.1063/5.0082046

openalex created_date 2021/12/31 · openalex publication_date 2022/04/01 · openalex updated_date 2026/07/28

Abstract

The agenda of dissipative quantum chaos is to create a toolbox that would allow us to categorize open quantum systems into "chaotic" and "regular" ones. Two approaches to this categorization have been proposed recently. One of them is based on the spectral properties of generators of open quantum evolution. The other one utilizes the concept of Lyapunov exponents to analyze quantum trajectories obtained by unraveling this evolution. By using two quantum models, we relate the two approaches and try to understand whether there is an agreement between the corresponding categorizations. Our answer is affirmative.

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