Applied Informatics

Apr 22, 2024 | epjc.epj.org | Applied Informatics

Eur. Phys. J.

Apr 5, 2024 | pubs.aip.org | Los Alamos |Applied Informatics |Polish Academy |Tongwei Liu

Despite initial and outspoken hesitation,1 quantum chaos has established itself as a veritable field of modern research. However, whereas classically chaotic dynamics describes the behavior of trajectories in phase space, quantum chaos refers to the exponentially fast dispersion of information throughout a quantum many-body system.

Aug 29, 2023 | link.aps.org | Philipp Böttcher |Forschungszentrum Jülich |Benjamin Schäfer |Applied Informatics

Quantifying the stability of an equilibrium is central in the theory of dynamical systems as well as in engineering and control. A comprehensive picture must include the response to both small and large perturbations, leading to the concepts of local (linear) and global stability. Here, we show how systems displaying Hopf bifurcations show contrarian results for these two aspects of stability: Global stability is large close to the point where the system loses its stability altogether.