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  • Correlation-Dependent Coherent to Incoherent Transitions in Resonant Energy Transfer Dynamics

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    Author
    Nazir, Ahsan
    Year published
    2009
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    Abstract
    I investigate energy transfer in a donor-acceptor pair beyond weak system-bath coupling. I identify a transition from coherent to incoherent dynamics with increasing temperature, due to multiphonon effects not captured by a standard weak-coupling treatment. The crossover temperature has a marked dependence on the degree of spatial correlation between fluctuations experienced at the two system sites. For strong correlations, this leads to the possibility of coherence surviving into a high-temperature regime.I investigate energy transfer in a donor-acceptor pair beyond weak system-bath coupling. I identify a transition from coherent to incoherent dynamics with increasing temperature, due to multiphonon effects not captured by a standard weak-coupling treatment. The crossover temperature has a marked dependence on the degree of spatial correlation between fluctuations experienced at the two system sites. For strong correlations, this leads to the possibility of coherence surviving into a high-temperature regime.
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    Journal Title
    Physical Review Letters
    Volume
    103
    Publisher URI
    http://prl.aps.org/
    DOI
    https://doi.org/10.1103/PhysRevLett.103.146404
    Copyright Statement
    © 2009 American Physical Society. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
    Subject
    Electronic and Magnetic Properties of Condensed Matter; Superconductivity
    Quantum Physics not elsewhere classified
    Publication URI
    http://hdl.handle.net/10072/26606
    Collection
    • Journal articles

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