What does chaos look like at the quantum level? Calculations by Eric Heller in 1984 showed that if you shrink certain typical chaotic systems to quantum levels, there are repetitive characteristics of the wavefunction that might naively seem quite “unchaotic” – referred to as “quantum scarring”...
philosophicalmagazine.com
Quantum systems 'remember' what they did
Theory of quantum birthmarks reveals that surprising ‘quantum scarring’ is an example of a general principle for all quantum systems.