Pair and Many-Body Resonance Energy Transfer: Molecular QED Theory
- Date: Mar 11, 2020
- Time: 11:00 - 12:30
- Speaker: CANCELLED - Akbar Salam
- Location: CFEL (Bldg. 99)
- Room: Seminar Room IV, O1.111
- Host: Angel Rubio, Michael Ruggenthaler
- Contact: email@example.com
A noteworthy success of the theory of molecular quantum electrodynamics
(QED) [1,2] is its ability to rigorously treat both radiation-matter and
inter-particle interactions. An example of the latter that is to be
presented in this seminar is resonance energy transfer (RET)  between
an excited donor species and a ground state acceptor molecule separated
by a distance R. Migration of energy occurs via the propagation
of a single virtual photon. A diagrammatic perturbation theory
calculation of the Fermi golden rule exchange rate for oriented and
isotropic systems is reviewed first.
It is shown how R-6 radiationless (Förster) and R-2 radiative transfer emerges from the general result as near- and far-zone asymptotic limits, respectively. Theory is extended by including the effect that one or two additional passive, polarizable molecules have in relaying energy between donor and acceptor [4-7]. Insight is gained into exchange of energy taking place in a medium by comparing the present formulation of a many-body theory that explicitly accounts for direct and indirect transfer mechanisms with macroscopic treatments of an environment.
 A. Salam, Molecular Quantum Electrodynamics, John Wiley & Sons, Inc., 2010.
 D. L. Andrews, G. A. Jones, A. Salam and R. G. Woolley, J. Chem. Phys. 148, 040901 (2018).
 A. Salam, Atoms 6, 56 (2018).
 A. Salam, J. Chem. Phys. 136, 014509 (2012).
 A. Salam, J. Phys. Chem. A 123, 2853 (2019).
 A. Salam, J. Chem. Phys. 151, 244119 (2019).
 J. S. Ford, A. Salam and G. A. Jones, J. Phys. Chem. Lett. 10, 5654 (2019).