Electronic coherence dephasing in excitonic molecular complexes: role of Markov and secular approximations.

Journal of Molecular Modeling
Jan Olšina, Tomáš Mančal

Abstract

We compare four different types of equations of motion for reduced density matrix of a system of molecular excitons interacting with thermodynamic bath. All four equations are of second order in the linear system-bath interaction Hamiltonian, with different approximations applied in their derivation. In particular we compare time-nonlocal equations obtained from so-called Nakajima-Zwanzig identity and the time-local equations resulting from the partial ordering prescription of the cummulant expansion. In each of these equations we alternatively apply secular approximation to decouple population and coherence dynamics from each other. We focus on the dynamics of intraband electronic coherences of the excitonic system which can be traced by coherent two-dimensional spectroscopy. We discuss the applicability of the four relaxation theories to simulations of population and coherence dynamics, and identify features of the two-dimensional coherent spectrum that allow us to distinguish time-nonlocal effects.

References

Mar 23, 2002·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Ana DamjanovićKlaus Schulten
Mar 11, 2003·Annual Review of Physical Chemistry·David M Jonas
May 4, 2004·Optics Letters·T BrixnerG R Fleming
Jul 13, 2004·Physical Review Letters·Seogjoo JangRobert J Silbey
Aug 31, 2004·The Journal of Chemical Physics·Tobias BrixnerGraham R Fleming
Jul 21, 2006·The Journal of Physical Chemistry. B·Minhaeng ChoGraham R Fleming
Aug 17, 2006·Proceedings of the National Academy of Sciences of the United States of America·Donatas ZigmantasGraham R Fleming
Oct 19, 2006·Journal of Molecular Graphics & Modelling·Thanyada RungrotmongkolSupa Hannongbua
Dec 3, 2008·The Journal of Chemical Physics·Masoud MohseniAlán Aspuru-Guzik
Jan 20, 2009·Science·Elisabetta Collini, Gregory D Scholes
Jun 3, 2009·The Journal of Chemical Physics·Benoit PalmieriShaul Mukamel

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Citations

Feb 11, 2012·The Journal of Chemical Physics·Sebastiaan M Vlaming, Robert J Silbey
Nov 5, 2014·The Journal of Chemical Physics·Jan OlšinaTomáš Mančal
Jul 5, 2013·The Journal of Physical Chemistry. B·Tomáš Mančal

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