Coherence recurrences are prominent in T+S because solvent-induced decoherence is the slowest in this case (see Figure ). By contrast, T shows no recurrences due to ultrafast decoherence due to the solvent. Figure details the decoherence due to intramolecular vibrations. The trend for the early time decoherence due to vibrations is opposite to the overall behavior with T showing the slowest decoherence, followed by T+S+P and then T+S. Thus, the overall decoherence trends in Figure are due to both contributions of solvent and intramolecular vibrations, even at early times.