Calculation of the exciton green's function of a molecular crystal from a two-site dynamical coherent potential approximation |
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| Authors: | Richard Friesner Robert Silbey |
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| Institution: | Department of Chemistry and Center for Material Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA |
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| Abstract: | A new two-site dynamical coherent potential approximation for exciton-phonon interaction models corresponding to a homomorphic partition of the hamiltonian is described. The renormalization of both the site energy and the exciton bandwidth is accomplished in contrast to single-site CPA models. |
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