An Interdisciplinary Journal

2002, Vol.5, No.2, pp.173-180

Stochastic Description of Vibrational Energy Relaxation in Fluids.
D. Schwarzer, D.V. Vikhrenko, and V.S. Vikhrenko

Vibrational energy relaxation of a diatomic solute in a liquid solvent is investigated by means of Langevin equation for the vibrator energy with the stochastic power source characterized by an exponential time correlation function. The memory effects included via the stochastic power source allow one to explain the behavior of the mean square energy fluctuations on short and long time scales that was obtained from molecular dynamics simulations.
Key words: Langevin equation, nonlinear interaction, vibrational energy relaxation, energy fluctuations, time correlation functions, molecular dynamics

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