Asymptotic form of neutron Cooper pairs in weakly bound nuclei
Asymptotic form of neutron Cooper pairs in weakly bound nuclei
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弱束缚核中中子库珀对的渐近形式
DOI：
10.1103/physrevc.90.034313
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发表时间：
2014
影响因子：
3.1
通讯作者：
J. Meng
中科院分区：
文献类型：
--
作者：
Y. Zhang;M. Matsuo;J. Meng
用Bogoliubov超流费米子理论研究了中子库珀对穿透核表面的渐近形式。基于控制Cooper对波函数的双粒子Schr“odinger方程，通过对弱束缚核和稳定核的系统研究，证明了即使在渐近大距离极限下，库珀对也是空间关联的，并揭示了对凝聚体的穿透长度普遍受双中子分离能${S}{2n}$和双中子质量$2m$的控制.
The asymptotic form of a neutron Cooper pair penetrating to the exterior of a nuclear surface is investigated with the Bogoliubov theory for the superfluid fermions. Based on a two-particle Schr\"odinger equation governing the Cooper-pair wave function and systematic studies for both weakly bound and stable nuclei, the Cooper pair is shown to be spatially correlated even in the asymptotic large distance limit, and the penetration length of the pair condensate is revealed to be universally governed by the two-neutron separation energy ${S}_{2n}$ and the di-neutron mass $2m$.