管状绿小体定域-离域交叉处的超辐射
Superradiance at the localization-delocalization crossover in tubular chlorosomes
摘要：
研究了无序对绿硫细菌Cf管状叶绿体光谱性质的影响。橙黄色采用与光谱和结构研究相一致的对角和非对角无序的弗兰克尔激子哈密顿量，我们分析了激子的本地化和光谱统计的绿小体。一个大小相关的局域化-离域交叉被发现发生作为激子能量的函数。交叉能量区域与具有最大化超辐射的更光学活性的状态相一致，并且因此更有利于能量转移。
英文摘要：
We study the effect of disorder on spectral properties of tubular chlorosomes in green sulfur bacteria Cf. aurantiacus. Employing a Frenkel-exciton Hamiltonian with diagonal and off-diagonal disorder consistent with spectral and structural studies, we analyze excitonic localization and spectral statistics of the chlorosomes. A size-dependent localization-delocalization crossover is found to occur as a function of the excitonic energy. The crossover energy region coincides with the more optically active states with maximized superradiance, and is, consequently, more conducive for energy transfer.
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