Quantum-classical correspondence and mechanical analysis of a classical-quantum chaotic system
Bi Haiyun1, 3, Qi Guoyuan2, †, Hu Jianbing1, Wu Qiliang4
       

Quantum-classical correspondence, (a) phase portrait for the 〈x1 − x2⟩, (b) the kinetic energy 〈K⟩, (c) the potential energy 〈U⟩, (d) the Casimir energy 〈C⟩.