SEARCH Articles Figures Tables Fast vibrational relaxation, ultrafast dynamics Relaxation processes, ultrafast Relaxation rates ultrafast Theoretical Description of Ultrafast Structural Relaxation Ultrafast Ultrafast Structural Relaxation Ultrafast energy relaxation times Ultrafast relaxation dimers Ultrafast relaxation electronically excited states Ultrafast relaxation ground electronic states Ultrafast relaxation pump-probe experiments Ultrafast relaxation states Ultrafast relaxation time-resolved spectroscopy Vibrational relaxation ultrafast dynamics