Journal of Chemical Physics, Vol.107, No.17, 6677-6680, 1997
Intramolecular vibrational relaxation seen as expansion in phase space .3. The long-time limit
Asymptotic formulas that describe the behavior of the function N(T) measuring the phase space volume sampled by a nonstationary wave packet during its time evolution are derived. It is shown that, in the long-time limit, N(T)similar to T-1 when the dynamics is regular, whereas N(T)similar to T-2 ln T for the chaotic case. (C) 1997 American Institute of Physics. [S0021-9606(97)03641-6].