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Open Quantum Systems Decoherence Quantum Chemistry

Excitons in Molecular Aggregates with Lévy Disorder: Anomalous Localization and Exchange Broadening of Optical Spectra

arXiv
Authors: A. Eisfeld, S. M. Vlaming, V. A. Malyshev, J. Knoester

Year

2010

Paper ID

11400

Status

Preprint

Abstract Read

~2 min

Abstract Words

80

Citations

N/A

Abstract

We predict the existence of exchange broadening of optical lineshapes in disordered molecular aggregates and a nonuniversal disorder scaling of the localization characteristics of the collective electronic excitations (excitons). These phenomena occur for heavy-tailed Lévy disorder distributions with divergent second moments - distributions that play a role in many branches of physics. Our results sharply contrast with aggregate models commonly analyzed, where the second moment is finite. They bear a relevance for other types of collective excitations as well.

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  • We predict the existence of exchange broadening of optical lineshapes in disordered molecular aggregates and a nonuniversal disorder scaling of the localization characteristics...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1009.1102 [2] arXiv https://arxiv.org/abs/1009.1102 [3] Publisher https://arxiv.org/abs/1009.1102

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