Role of superfluidity in nuclear incompressibilities
Role of superfluidity in nuclear incompressibilities
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超流性在核不可压缩性中的作用
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
E. Khan
中科院分区：
文献类型：
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作者：
E. Khan
原子核是研究超流性在费米系统可压缩性中作用的有利工具。使用约束Hartree-Fock Bogoliubov方法预测锡同位素中巨单极共振（GMR）的质心，确保完全自洽的处理。超流性有利于原子核的压缩性。配对关联解释了为什么像{sup 208}Pb这样的双魔核比开壳层核更硬。同位素链上巨磁电阻的完全自洽预测应该是微观上提取给定能量泛函的不可压缩性和密度依赖性的方法。K{sub sym}的宏观提取，不对称不可压缩性，受到质疑。对不稳定核巨磁电阻效应的研究是必要的。核物质不可压缩性对能隙的依赖性也应该研究。
Nuclei are propitious tools to investigate the role of the superfluidity in the compressibility of a Fermionic system. The centroid of the Giant Monopole Resonance (GMR) in Tin isotopes is predicted using a constrained Hartree-Fock Bogoliubov approach, ensuring a full self-consistent treatment. Superfluidity is found to favour the compressibitily of nuclei. Pairing correlations explain why doubly magic nuclei such as {sup 208}Pb are stiffer compared to open-shell nuclei. Fully self-consistent predictions of the GMR on an isotopic chain should be the way to microscopically extract both the incompressibility and the density dependence of a given energy functional. The macroscopic extraction of K{sub sym}, the asymmetry incompressibility, is questioned. Investigations of the GMR in unstable nuclei are called for. Pairing gap dependence of the nuclear matter incompressibility should also be investigated.