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| 題 名 | Composite Particle Representation as an Effective Method for Three-Nucleon Bound States |
|---|---|
| 作 者 | Khoa,Dao T.; Wu,Cheng Li; | 書刊名 | Chinese Journal of Physics |
| 卷 期 | 37:2 1999.04[民88.04] |
| 頁 次 | 頁142-171 |
| 分類號 | 339 |
| 關鍵詞 | |
| 語 文 | 英文(English) |
| 英文摘要 | An effective boson-mapping approach, known as the Composite Particle Representation (CPR), has been further developed to study the existing three-ucleon systems (□He and □H nuclei). Within the present CPR formalism it is possible to study the cluster effect in the three-nucleon system, with a neutron-proton pair forming deuteron (d) cluster inside □He or □H, and building an effective two-body system (such as d + p in □He or d + n in □H). The total interaction in the three-nucleon system can then be calculated from a nucleon-nucleon (NN) interaction which reproduces the deuteron binding energy and wave function as a solution of the two-nucleon problem. The use of a harmonic oscillator basis to construct the single-particle wave functions allows us to subtract out the center-of-mass motion explicitly in the present CPR formalism. An exact summation method for the infinite series of the Wigner-Brillouin perturbation expansion has been suggested, which naturally takes into account the deuteron cluster formation or breakup inside the three-nucleon system. The results obtained, using an appropriately chosen effective NN interaction, reproduce the binding energies of □He and □H reasonably well and show a significant d cluster component in the total wave function for these nuclei. |
本系統中英文摘要資訊取自各篇刊載內容。