Microscopic understanding of nucleon many-body systems on the basis of three-nucleon forces of chiral effective field theory
| Project/Area Number |
25400266
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Osaka University (2014-2015)
Kyushu Dental College (2013) |
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Principal Investigator |
Kohno Michio 大阪大学, 核物理研究センター, 協同研究員 (40234710)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
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| Keywords | ３体核力 / 核物質 / カイラル有効場理論 / 原子核の飽和性 / 密度依存有効２体力 / スピン軌道力 / テンソル力 / 微視的光学模型ポテンシャル / 核物質計算 / 有効相互作用 / Ｇ行列 / ３体力 / 核物質の飽和性 / カイラル有効理論 / 核物質の状態方程式 |
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| Outline of Final Research Achievements |
Microscopic quantum many-body calculations using realistic two-nucleon interactions have not been able to quantitatively reproduce basic properties of atomic nuclei, such as saturation. Although three-nucleon forces have been supposed to be taken into account, previous studies have had to rely on phenomenological adjustment. Chiral effective field theory, which enables the systematic introduction of three-nucleon forces consistent with its two-nucleon forces, has changed the situation. In this study, I first introduce effective two-body interactions by folding one-nucleon degrees of freedom of the three-nucleon force in nuclear matter, and then investigate their effects in lowest-order Brueckner theory. The description of nuclear saturation properties is shown to be much improved, and in addition the strength of spin-orbit interaction, which is essential for explaining the nuclear shell structure, is enhanced to account for the empirical strength.
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Report
(4 results)
Research Products
(20 results)
