The Be isotopes with \(\alpha \) + \(\alpha \) + valence neutrons clustering structure are studied within the Real-time Evolution Method (REM). By solving the equation-of-motion (EOM) of the Gaussian wave packets involving the complex spatial coordinates and spin variables, various molecular configurations are obtained and then are superposed in the Generator Coordinate Method (GCM). The obtained energy spectra from Be isotopes are better than those from other cluster models and also basically consistent with experiments. It is found the real-time evolution method provides us with an effective way to choose basis wave functions for dealing with the multi-neutron molecular structures of Be isotopes.

在实时演化方法（REM）中研究了具有\（\ alpha \） + \（\ alpha \） +价中子聚集结构的Be同位素。通过求解涉及复杂空间坐标和自旋变量的高斯波包的运动方程（EOM），可以获得各种分子构型，然后将其叠加在生成器坐标法（GCM）中。从Be同位素获得的能谱比从其他簇模型获得的能谱要好，并且与实验基本吻合。发现实时演化方法为我们提供了一种选择基波函数的有效方法，以处理Be同位素的多中子分子结构。