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- W2473399392 abstract "Time dependent variational approach is a convenient method to characterize the excitation dynamics in molecular aggregates for different strengths of system-bath interaction a, which does not require any additional perturbative schemes. Until recently, however, this method was only applicable in zero temperature case. It has become possible to extend this method for finite temperatures with the introduction of stochastic time dependent variational approach. Here we present a comparison between this approach and the exact hierarchical equations of motion approach for describing excitation dynamics in a broad range of temperatures. We calculate electronic population evolution, absorption and auxiliary time resolved fluorescence spectra in different regimes and find that the stochastic approach shows excellent agreement with the exact approach when the system-bath coupling is sufficiently large and temperatures are high. The differences between the two methods are larger, when temperatures are lower or the system-bath coupling is small." @default.
- W2473399392 created "2016-07-22" @default.
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- W2473399392 date "2016-12-01" @default.
- W2473399392 modified "2023-09-30" @default.
- W2473399392 title "Benchmarking the stochastic time-dependent variational approach for excitation dynamics in molecular aggregates" @default.
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- W2473399392 doi "https://doi.org/10.1016/j.chemphys.2016.06.014" @default.
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