FMO coherence dephasing: ρ_12(t) = ρ_12(0)·exp(-γ_φ t); τ_φ = 1/γ_φ

Secular Redfield / Lindblad master-equation treatment of pure dephasing on the FMO exciton coherence. In the site basis after ENAQT-relevant diagonalisation, the off-diagonal element of the reduced density matrix obeys dρ_12/dt = (-iω_12…