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SYET: Symposium Resonant Energy Transfer and Interatomic Coulombic Decay

SYET 1: Resonant Energy Transfer and Interatomic Coulombic Decay

SYET 1.3: Hauptvortrag

Donnerstag, 8. März 2018, 12:00–12:30, RW HS

Molecular QED of Resonance Energy Transfer: Pair and Many-Body Theory — •Akbar Salam — Department of Chemistry, Wake Forest University, Winston-Salem, NC 27109-7486, USA

One of the successes of the theory of molecular QED [1] in the area of inter-particle interactions is the unified description it furnishes of resonance energy transfer (RET) [1]. This process is viewed as arising from the exchange of a single virtual photon between an initially excited donor species and a ground state acceptor moiety. Asymptotic limits of the Fermi golden rule transition rate reveal a radiationless Förster type of exchange in the near-zone that has inverse sixth power separation distance dependence, and a radiative inverse square law behaviour in the far-zone.

In this talk, pair RET is briefly reviewed before recent results are presented concerning the influence that one and two additional passive polarisable molecules have in modifying the transfer rate [2-4]. Insight is gained into migration of energy in an environment of bath molecules by comparing these microscopic models of RET occurring between individual particles with polariton based approaches [5] in which direct excitation energy transfer is facilitated by medium-dressed photons.

[1] A. Salam, Molecular Quantum Electrodynamics, Wiley, Hoboken, 2010. [2] A. Salam, J. Chem. Phys. 136, 014509 (2012). [3] D. L. Andrews and J. S. Ford, J. Chem. Phys. 139, 014107 (2013). [4] D. Weeraddana, N. Premaratne and D. L. Andrews, Phys. Rev. B 92, 035128 (2015). [5] G. Juzeliunas and D. L. Andrews, Phys. Rev. B 49, 8751 (1994).