Abstract

In a recent paper⁽¹⁾ we presented a cluster generalization of the Dynamical Coherent Potential Approximation (DCPA). When applied to exciton-phonon interactions in molecular crystals the theory represents a distinct improvement over perturbative and single site DCPA calculations. We also extended our formalism to the case of several molecules per unit cell. Our model assumed throughout one harmonic vibrational mode per molecule.

© 1984 Optical Society of America