Effect of three-body interaction on hot asymmetric nuclear matter
Li Zeng-Hua (李增花)ab, Zuo Wei (左维)a, Lu Guang-Cheng (陆广成)ab
a Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; b Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
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.
Received: 05 April 2004
Revised: 07 June 2004
Accepted manuscript online:
Fund: 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 Min
Cite this article:
Li Zeng-Hua (李增花), Zuo Wei (左维), Lu Guang-Cheng (陆广成) Effect of three-body interaction on hot asymmetric nuclear matter 2004 Chinese Physics 13 1848
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