非晶体系中的玻色子峰：声子介导的纳米团簇耦合作用
Boson peak in amorphous systems: role of phonon mediated coupling of nano-clusters
摘要：
基于一个非晶态固体作为一个集合的耦合纳米级分子团簇称为基本块的描述，我们分析了其哈密顿量的统计特性。然后使用该信息来导出振动态（非声子）的系综平均密度，其在光谱的大部分中是高斯的，在低频区域中是艾里函数。五个玻璃的实验数据的比较证实了我们的理论预测的有效性。
英文摘要：
Based on a description of an amorphous solid as a collection of coupled nanosize molecular clusters referred as basic blocks, we analyse the statistical properties of its Hamiltonian. The information is then used to derive the ensemble averaged density of the vibrational states (non-phonon) which turns out to be a Gaussian in the bulk of the spectrum and an Airy function in the low frequency regime. A comparison with experimental data for five glasses confirms validity of our theoretical predictions.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
