二维空间中的三体晕
Three-Body Halos in Two Dimensions
摘要：
在短程势坐标空间中建立了一种研究二维弱束缚三体量子系统的方法。空间扩展结构（晕）的发生进行了研究。博罗米恩系统存在于两个维度的某一类潜在的。大量的数值研究表明，一个弱束缚的二体态可以产生两个弱束缚的三体态，这是三维空间中Efimov效应的一种再现。这两种态在弱束缚极限下的性质具有普适性。PACS编号：03.65.Ge，21.45。+ v，31.15.Ja，02.60Nm
英文摘要：
A method to study weakly bound three-body quantum systems in two dimensions is formulated in coordinate space for short-range potentials. Occurrences of spatially extended structures (halos) are investigated. Borromean systems are shown to exist in two dimensions for a certain class of potentials. An extensive numerical investigation shows that a weakly bound two-body state gives rise to two weakly bound three-body states, a reminiscence of the Efimov effect in three dimensions. The properties of these two states in the weak binding limit turn out to be universal. PACS number(s): 03.65.Ge, 21.45.+v, 31.15.Ja, 02.60Nm
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