标题： 分子聚集体中具有莱维无序的激子：光学光谱的异常局域化和交换展宽 显示英文标题

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

摘要： 我们预测无序分子聚集体中光学线型的交换展宽的存在，以及集体电子激发（激子）局域特性的非普遍无序标度。 这些现象发生在具有发散二阶矩的重尾Lévy无序分布中——这类分布在物理学的许多分支中起着重要作用。 我们的结果与通常分析的聚集体模型形成鲜明对比，在这些模型中二阶矩是有限的。 它们也与其他类型的集体激发相关。 显示英文摘要

摘要： 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 L\'evy 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.