Figure 7.

Distortion of B850 exciton states due to Gaussian diagonal disorder. The dashed lines correspond to the exciton spectrum of the averaged B850 ring showing the degeneracy for all the states with the exception of the k=0 and k=9 states. The solid lines show the exciton spectrum of a single realization of Gaussian diagonal disorder with a width σ=200 cm⁻¹. With the inclusion of disorder, the degeneracies are lifted, yet the exciton states of the disordered Hamiltonian can be linked to those of the ideal Hamiltonian [cf. Fig. 3b].