Y. Tomkiewicz, E.M. Engler, et al.
Physical Review Letters
Paper
Short simple evaluation of expressions of the Debye-Waller form valid for anharmonic modes not in thermal equilibrium
Abstract
A one-sentence nonalgebraic evaluation of averages, such as occur in the theory of the Debye-Waller factor, is given, which is valid for certain types of anharmonic modes and also for ensembles more general than the canonical ensemble.
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