FIGURE 3. Characteristic anticorrelation between peak amplitude and width.
From the following article:
Evidence for wavelike energy transfer through quantum coherence in photosynthetic systems
Gregory S. Engel,
Tessa R. Calhoun,
Elizabeth L. Read,
Tae-Kyu Ahn,
Tomá
Man
al,
Yuan-Chung Cheng,
Robert E. Blankenship
&
Graham R. Fleming
Nature 446, 782-786(12 April 2007)
doi:10.1038/nature05678
The anticorrelation shown in b between the amplitude of the diagonal exciton peak (black line in a) and the ratio of the diagonal to anti-diagonal widths of the peak (red lines in a) is a characteristic predicted from theory for exciton quantum beating17. This pattern would not arise from phonon coupling and highlights the change in integrated line strength associated with quantum beating.