Energy relaxation and transfer in trimer

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62690094%3A18440%2F01%3A6511" target="_blank" >RIV/62690094:18440/01:6511 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Energy relaxation and transfer in trimer
Original language description
We consider the relaxation and transfer in symmetric trimer coupled to a phonon bath. The energy transfer within the trimer occurs via resonance interaction and coupling between the trimer and the bath occurs via modulation of the monomer energies by phonons. We compare the model introduced by Čápek with the Redfield model used commonly with secular approximation. We disscuss two initial conditions: a) The highest eigemstate of the trimer is initially excited, and b) the initial excitation is local. Wefind that the occupation probabilities in the representation of eigenstates are the same in both models. But it is not so for off-diagonal density matrix elements. Only if the off-diagonal elements vanish initially (initial condition a), they vanish .atarbitrary time in both models. If the initial excitation is local, off-diagonal elements differ essentially even in the long time limit.
Czech name
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Czech description
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Project
<a href="/en/project/GA202%2F98%2F0499" target="_blank" >GA202/98/0499: Femtosecond energy transfer and relaxation in the antenna system of the bacteria Rps. acidophila</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2001
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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