Many-dimensional quantum energy flow at low energy
Abstract
Criteria for ergodicity and rates of energy flow in a quantum mechanical system of $N$ coupled anharmonic oscillators where $N$ is large are determined at energies near the ground state of the system. High-order resonances are important for the transition at large $N$. The role of numerous virtual transitions, ``vibrational superexchange,'' in global transport is examined both for typical parts of the state space and special states often interrogated experimentally.
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