Correlation-Dependent Coherent to Incoherent Transitions in Resonant Energy Transfer Dynamics
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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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Physical Review Letters
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103
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© 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.
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Electronic and Magnetic Properties of Condensed Matter; Superconductivity
Quantum Physics not elsewhere classified
Mathematical Sciences
Physical Sciences
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