article published Torsten Meier author 3440000-0001-8864-2072 V. Chernyak author S. Mukamel author 293 department The pump−probe signal from the light-harvesting antenna LH2 of purple bacteria is analyzed using a Green function expression derived by solving the nonlinear exciton-oscillator equations of motion (NEE). A microscopic definition of the exciton mean free path (Lf) and localization size (Lρ) is given in terms of the off-diagonal elements of the exciton Green function and density matrix, respectively. Using phonon-induced (homogeneous) and disorder-induced (inhomogeneous) line widths compatible with superradiane measurements, we find that at 4.2 K the localization size is Lρ = 15 and that the shift ΔΩ between the positive and negative peaks in the differential absorption is determined by a different effective size Lf/2 = 5.6 associated with the exciton mean free path. Our model further predicts the recently observed superradiance coherence size determined by Lρ. American Chemical Society1997 eng 10.1021/jp970045v 101377332-7342 yes T. Meier, V. Chernyak, and S. Mukamel, “Multiple Exciton Coherence Sizes in Photosynthetic Antenna Complexes viewed by Pump-Probe Spectroscopy,” <i>The Journal of Physical Chemistry B</i>, vol. 101, no. 37, pp. 7332–7342, 1997, doi: <a href="https://doi.org/10.1021/jp970045v">10.1021/jp970045v</a>. Meier, Torsten, V. Chernyak, and S. Mukamel. “Multiple Exciton Coherence Sizes in Photosynthetic Antenna Complexes Viewed by Pump-Probe Spectroscopy.” <i>The Journal of Physical Chemistry B</i> 101, no. 37 (1997): 7332–42. <a href="https://doi.org/10.1021/jp970045v">https://doi.org/10.1021/jp970045v</a>. Meier T, Chernyak V, Mukamel S. Multiple Exciton Coherence Sizes in Photosynthetic Antenna Complexes viewed by Pump-Probe Spectroscopy. <i>The Journal of Physical Chemistry B</i>. 1997;101(37):7332-7342. doi:<a href="https://doi.org/10.1021/jp970045v">10.1021/jp970045v</a> Meier, Torsten, et al. “Multiple Exciton Coherence Sizes in Photosynthetic Antenna Complexes Viewed by Pump-Probe Spectroscopy.” <i>The Journal of Physical Chemistry B</i>, vol. 101, no. 37, American Chemical Society, 1997, pp. 7332–42, doi:<a href="https://doi.org/10.1021/jp970045v">10.1021/jp970045v</a>. T. Meier, V. Chernyak, S. Mukamel, The Journal of Physical Chemistry B 101 (1997) 7332–7342. @article{Meier_Chernyak_Mukamel_1997, title={Multiple Exciton Coherence Sizes in Photosynthetic Antenna Complexes viewed by Pump-Probe Spectroscopy}, volume={101}, DOI={<a href="https://doi.org/10.1021/jp970045v">10.1021/jp970045v</a>}, number={37}, journal={The Journal of Physical Chemistry B}, publisher={American Chemical Society}, author={Meier, Torsten and Chernyak, V. and Mukamel, S.}, year={1997}, pages={7332–7342} } Meier, T., Chernyak, V., &#38; Mukamel, S. (1997). Multiple Exciton Coherence Sizes in Photosynthetic Antenna Complexes viewed by Pump-Probe Spectroscopy. <i>The Journal of Physical Chemistry B</i>, <i>101</i>(37), 7332–7342. <a href="https://doi.org/10.1021/jp970045v">https://doi.org/10.1021/jp970045v</a> 433472023-04-02T21:09:44Z2023-05-01T13:33:59Z