A local-density-approximation description of high-momentum tails in isospin asymmetric nuclei
A local-density-approximation description of high-momentum tails in isospin asymmetric nuclei
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DOI：
10.1016/j.physletb.2022.137482
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发表时间：
2022-10
影响因子：
4.4
通讯作者：
Xiao-Hua Fan;Zu-Xing Yang;P. Yin;Peng-Hui Chen;J. Dong;Zhi-Pan Li;H. Liang
中科院分区：
文献类型：
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作者：
Xiao-Hua Fan;Zu-Xing Yang;P. Yin;Peng-Hui Chen;J. Dong;Zhi-Pan Li;H. Liang
We adapt the local density approximation to add the high-momentum tails (HMTs) to finite nuclei's Slater-determinant momentum distributions. The HMTs are extracted by the extended Brueckner-Hartree-Fock (EBHF) method or by the lowest order cluster approximation. With a correction factor being added to EBHF, it is sufficiently in agreement with the experimental benchmark, ie, the high-momentum N/Z ratios approximately equal to 1, and the low-momentum N/Z ratios approximately equal to N/Z of the systems. It is also found that the tensor force makes the nucleon-nucleon correlations appear more easily on the nuclear surface region and the percentage of high-momentum (p> 300 MeV/c) nucleons, around 17%–18%, independent of isospin asymmetry.
