Springer Complexity is an interdisciplinary program that publishes research and academic-level teaching on both fundamental and applied aspects of complex systems, spanning various disciplines including natural and life sciences, engineering, economics, medicine, neuroscience, and computer science. Complex systems are characterized by their ability to generate new collective behaviors through the interaction of many parts, leading to the spontaneous formation of distinctive structures in time, space, or function. The program covers a wide range of topics such as self-organization, nonlinear dynamics, synergetics, turbulence, dynamical systems, and stochastic processes. The two major book publication platforms of the Springer Complexity program are the monograph series "Understanding Complex Systems," focusing on applications, and the "Springer Series in Synergetics," dedicated to theoretical and methodological foundations. The series includes classic texts like Haken’s *Synergetics and Information and Self-Organization* and Gardiner’s *Handbook of Stochastic Methods*. The book *Quantum Signatures of Chaos* by Fritz Haake, part of the Springer Series in Synergetics, is a comprehensive treatment of the statistical and dynamical aspects of quantum chaos. It covers topics such as level repulsion, random matrix theory, level clustering, quantum localization, dissipative systems, and classical Hamiltonian chaos. The book also delves into the semiclassical roles of classical orbits and superanalysis for random matrix theory.Springer Complexity is an interdisciplinary program that publishes research and academic-level teaching on both fundamental and applied aspects of complex systems, spanning various disciplines including natural and life sciences, engineering, economics, medicine, neuroscience, and computer science. Complex systems are characterized by their ability to generate new collective behaviors through the interaction of many parts, leading to the spontaneous formation of distinctive structures in time, space, or function. The program covers a wide range of topics such as self-organization, nonlinear dynamics, synergetics, turbulence, dynamical systems, and stochastic processes. The two major book publication platforms of the Springer Complexity program are the monograph series "Understanding Complex Systems," focusing on applications, and the "Springer Series in Synergetics," dedicated to theoretical and methodological foundations. The series includes classic texts like Haken’s *Synergetics and Information and Self-Organization* and Gardiner’s *Handbook of Stochastic Methods*. The book *Quantum Signatures of Chaos* by Fritz Haake, part of the Springer Series in Synergetics, is a comprehensive treatment of the statistical and dynamical aspects of quantum chaos. It covers topics such as level repulsion, random matrix theory, level clustering, quantum localization, dissipative systems, and classical Hamiltonian chaos. The book also delves into the semiclassical roles of classical orbits and superanalysis for random matrix theory.