| Effect of three-body interaction on hot asymmetric nuclear matter |
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| 作者姓名： | 李增花 左维 陆广成 |
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| 作者单位： | Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; Graduate School of the Chinese Academy of Sciences, Beijing 100039, China;Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; Graduate School of the Chinese Academy of Sciences, Beijing 100039, China |
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| 基金项目： | Project supported partly by the Knowledge Innovation Programme of the Chinese Academy of Sciences (Grant No KJCX2-SW-N02), the State Key Development Programme of Basic Research of China (Grant No G2000077400 ), and the Key Preresearch Programme of the Ministry of Science and Technology, China (Grant No 2002CCB00200), the National Natural Science Foundation of China (Grant Nos 10235030, 10175082). |
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| 摘 要： | The properties of hot asymmetric nuclear matter are studied in the framework of the finite temperature Brueckner－Hartree－Fock theory that is extended to include the contribution of microscopic three-body forces. We give the variation of the critical temperature with the asymmetry parameter and show the effect brought by this three-body repulsive potential on the value of the critical asymmetry of the phase transition for asymmetric nuclear matter. Owing to the additional repulsion provided by three-body forces, this value decreases. In addition, the domain of mechanical instability for hot nuclear matter is also indicated, which gradually shrinks with increasing asymmetry and temperature.
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| 关 键 词： | 核物质 三体力 对称量 不稳定性 强子 |
| 收稿时间： | 4/5/2004 12:00:00 AM |
| 修稿时间： | 6/7/2004 12:00:00 AM |
Effect of three-body interaction on hot asymmetric nuclear matter |
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| Li Zeng-Hu,Zuo Wei and Lu Guang-Cheng.Effect of three-body interaction on hot asymmetric nuclear matter[J].Chinese Physics B,2004,13(11):1848-1853. |
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| Authors: | Li Zeng-Hu Zuo Wei and Lu Guang-Cheng |
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| Institution: | Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; Graduate School of the Chinese Academy of Sciences, Beijing 100039, China |
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| Abstract: | The properties of hot asymmetric nuclear matter are studied in the framework of the finite temperature Brueckner－Hartree－Fock theory that is extended to include the contribution of microscopic three-body forces. We give the variation of the critical temperature with the asymmetry parameter and show the effect brought by this three-body repulsive potential on the value of the critical asymmetry of the phase transition for asymmetric nuclear matter. Owing to the additional repulsion provided by three-body forces, this value decreases. In addition, the domain of mechanical instability for hot nuclear matter is also indicated, which gradually shrinks with increasing asymmetry and temperature. |
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| Keywords: | nuclear matter three-body force asymmetry parameter mechanical instability |
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