Absence of asymptotic-time symmetry breaking in a symmetric double-well model of the H-bond with damped stretching mode

(Received 11 April 1990, revised 3 September 1990, accepted 8 October 1990)

Abstract
The proof is given that in a symmetric double well model of symmetric H-bond with damped stretching mode, there is no asymptotic-time symmetry breaking owing to a full initial asymmetry of the proton localization. So, in a correspondence with the ergodic hypothesis, the final proton distribution deduced from the kinetic treatment is the same in both wells as predicted by the equilibrium statistical mechanics.