A simplified proof of the Kosloff–Rice theorem: Intramolecular quantum dynamics cannot be chaotic

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Abstract
The title theorem follows from formally equivalent time evolutions of the bounded systems’ quantum wave function described by the Schrödinger equation, and regular classical trajectories described by corresponding Hamilton’s equations. Instructive model applications include dynamics of molecules with time-dependent Hamiltonians, e.g., intramolecular vibrational energy redistributions, and state selective vibrational transitions induced by periodic sub-ps IR laser pulses.