Molecular Polariton under Collective coupling regime

In this talk, I will discuss our recent theoretical progress in understanding the polariton relaxation dynamics under the collective coupling effect. I will present an analytic expression of the non-equilibrium Fermi’s golden rule (NE-FGR) expression [1] for a Holstein–Tavis–Cumming Hamiltonian, which provides a quantitative understanding of population relaxation [1] as well as decoherence [2] among polariton states and the dark states. I will then discuss the regimes where collective coupling and polarization can significantly influence photochemical dynamics. If time allows, I will also briefly discuss our recent progress in a theory for the vibrational strong coupling (VSC) induced change of rate constant [3].

[1] "Non-Equilibrium Rate Theory for Polariton Relaxation Dynamics", J. Chem. Phys. 161, 104109 (2024)

[2] "Mechanism of Polariton Decoherence in the Collective Light-Matter Couplings Regime", 10.26434/chemrxiv-2024-w70hr

[3] "Theory of Resonance Suppression in Vibrational Polariton Chemistry", 10.26434/chemrxiv-2024-m7t4c