中文摘要：

针对近零温度下玻色一爱因斯坦凝聚态的特点，建立了复合原子表示模型．提出了复合原子的概念，研究发现复合原子具有一定的零点半径与结合能，得出了相应的表达式．认为该物态作为一个宏观量子态的说法具有相对性，应该据研究角度而定．同时，给出了二个分离的玻色一爱因斯坦凝聚态之间产生1／R型作用势的几种情况，为同类实验提供了理论依据．

英文摘要：

The composite atom representation model is set up by the characters of BEC, proposing the concept of composite atom , finding some certain point-like radius and bound energy, and getting some corresponding formulae for point-like radius and bound energy in the paper. As a result of some certain structural factor, the pop view for BEC being a macroscopic quantum state is contradicted in the paper. We think that the view of a macroscopic quantum state is relative and should be treated with by studying level. In the meantime, several situations for 1/R type of interactive potential between two spatial separated BEC are given, the theoretical arguments are provided with the similar experiments in the paper with the model.