An investigation into the energy transfer efficiency of a two-pigment photosynthetic system using a macroscopic quantum model

• URL: http://arxiv.org/abs/2006.12493v1
• Date: Sat, 20 Jun 2020 12:59:02 GMT
• Title: An investigation into the energy transfer efficiency of a two-pigment photosynthetic system using a macroscopic quantum model
• Authors: Fatemeh Ghasemi and Afshin Shafiee
• Abstract summary: We investigate the effect of macroscopic quantum behavior of a system of two pigments on the transport phenomena in this system model. Our results demonstrate that the quantum efficiency is robust with respect to the macroscopicity parameter h solely. The ratio of macroscopicity over the pigment-pigment interaction energy can be considered as a parameter that may control the energy transfer efficiency at a given time.
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• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Despite several different measures of efficiency that are applicable to the photosynthetic systems, a precise degree of efficiency of these systems is not completely determined. Introducing an efficient model for the dynamics of light-harvesting complexes in biological environments is a major purpose in investigating such systems. Here, we investigate the effect of macroscopic quantum behavior of a system of two pigments on the transport phenomena in this system model which interacts with an oscillating environment. We use the second-order perturbation theory to calculate the time-dependent population of excitonic states of a two-dimensional Hamiltonian using a non-master equation approach. Our results demonstrate that the quantum efficiency is robust with respect to the macroscopicity parameter h solely, but the ratio of macroscopicity over the pigment-pigment interaction energy can be considered as a parameter that may control the energy transfer efficiency at a given time. So, the dynamical behavior and the quantum efficiency of the supposed photosynthetic system may be influenced by a change in the macroscopic behavior of the system.

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