Hamiltonian systems intramolecular dynamics

As in the classical case, the question of the nature of intramolecular energy flow—whether it is statistical or whether it displays a specific pathway— is of interest. Unfortunately, few quantum calculations on realistic molecular systems have been performed. The example of the dynamics of benzene, initially prepared in an excited state of the C—H bond, has, however, been treated quantum mechanically. Here, the relevant zero-order Hamiltonian is of the form... 

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