丰中子核中的Efimov态及其Fano共振
Efimov states and their Fano resonances in a neutron-rich nucleus
摘要：
弹性n+ $^{19}$ C散射中的非对称共振归因于这种丰中子核的Efimov态，即当n+n+ $^{18}$ C系统中没有一对束缚或其中一些仅弱束缚时的三体束缚态。通过拟合Fano描述的一般共振形状，我们提取共振位置，宽度和“Fano剖面指数”。虽然Efimov态在物理学的许多领域都被广泛讨论，但只有一个最近的实验观察是在铯原子的三聚体中。我们提出的Efimov和Fano现象的结合可能导致在核中的实验实现。
英文摘要：
Asymmetric resonances in elastic n+$^{19}$C scattering are attributed to Efimov states of such neutron-rich nuclei, that is, three-body bound states of the n+n+$^{18}$C system when none of the pairs is bound or some of them only weakly bound. By fitting to the general resonance shape described by Fano, we extract resonance position, width, and the "Fano profile index". While Efimov states have been discussed extensively in many areas of physics, there is only one very recent experimental observation in trimers of cesium atoms. The conjunction that we present of the Efimov and Fano phenomena may lead to experimental realization in nuclei.
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