Journal of Statistical Physics, Vol. 67, Nos. 1/2, 1992. p. 331-346.
The time correlation function ..., which is related to the dipole spectrum and is the main focus of quantum molecular time scale generalized Langevin equation theory, is calculated for the Hamiltonian system in which a single oscillator is coupled by a nonlinear Davydov term to a chain of oscillators comprising a phonon heat bath...