2014/08/31 by Jan Jeske, David Ing, David J. Ing +3 · 3 citations
Computer Science · Physics and Astronomy · #Colors of noise #Complex system #Connection (principal bundle) #Noise (video) #Nonlinear Dynamics and Pattern Formation #Physical system #Spectroscopy and Quantum Chemical Studies #Strong Light-Matter Interactions #White noise #physics.bio-ph #physics.chem-ph #quant-ph
paper · pdf · doi:10.1063/1.4907370
published as J. Chem. Phys. 142, 064104 (2015)
openalex publication_date 2015/02/10 · arxiv created 2015/02/11 · arxiv updated 2015/02/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We challenge the misconception that Bloch-Redfield equations are a less powerful tool than phenomenological Lindblad equations for modeling exciton transport in photosynthetic complexes. This view predominantly originates from an indiscriminate use of the secular approximation. We provide a detailed description of how to model both coherent oscillations and several types of noise, giving explicit examples. All issues with non-positivity are overcome by a consistent straightforward physical noise model. Herein also lies the strength of the Bloch-Redfield approach because it facilitates the analysis of noise-effects by linking them back to physical parameters of the noise environment. This includes temporal and spatial correlations and the strength and type of interaction between the noise and the system of interest. Finally, we analyze a prototypical dimer system as well as a 7-site Fenna-Matthews-Olson complex in regards to spatial correlation length of the noise, noise strength, temperature, and their connection to the transfer time and transfer probability.