Communication: Partial linearized density matrix dynamics for dissipative, non-adiabatic quantum evolution

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Abstract

An approach for treating dissipative, non-adiabatic quantum dynamics in general model systems at finite temperature based on linearizing the density matrix evolution in the forward-backward path difference for the environment degrees of freedom is presented. We demonstrate that the approach can capture both short time coherent quantum dynamics and long time thermal equilibration in an application to excitation energy transfer in a model photosynthetic light harvesting complex. Results are also presented for some nonadiabatic scattering models which indicate that, even though the method is based on a mean trajectory like scheme, it can accurately capture electronic population branching through multiple avoided crossing regions and that the approach offers a robust and reliable way to treat quantum dynamical phenomena in a wide range of condensed phase applications. © 2011 American Institute of Physics.

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Huo, P., & Coker, D. F. (2011). Communication: Partial linearized density matrix dynamics for dissipative, non-adiabatic quantum evolution. Journal of Chemical Physics, 135(20). https://doi.org/10.1063/1.3664763

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