1. A local-density-approximation description of high-momentum tails in isospin asymmetric nuclei
- Author
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Xiao-Hua Fan, Zu-Xing Yang, Peng Yin, Peng-Hui Chen, Jian-Min Dong, Zhi-Pan Li, and Haozhao Liang
- Subjects
Physics ,QC1-999 - Abstract
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, i.e., 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.
- Published
- 2022
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