Strongly Coupled Molecular Systems
Electronic and vibrational excitations are not localized on individual molecules
- Exchange narrowing can appear in the spectrum
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- Superradiance can be observed
Initially prepared state can evolve very rapidly via electron-phonon coupling
- ‘Lifetime broadening’ vs. exchange narrowing
- coherent vs. incoherent energy transfer
Energy disorder (both diagonal and off-diagonal) can play a major role in determining the electronic structure and consequent dynamics.
Nonlinear spectroscopy is an incisive probe of such systems