中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Critical temperature of liquid-gas phase transition for hot nuclear matter and three-body force effect

文献类型:期刊论文

作者Lu, GC; Zuo, W; Luo, PY; Li, ZH
刊名HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION
出版日期2005-11-01
卷号29期号:11页码:1061-1066
关键词microscopic three-body force finite temperature BHF approach nuclear matter liquid-gas phase transition critical temperature
ISSN号0254-3052
英文摘要The finite temperature Brueckner-Hartree-Fock (FTBHF) approach is extended by introducing a microscopic three-body force. Within the extended approach, the three-body force effects on the equation of state of hot nuclear matter and its temperature dependence have been investigated. The critical properties of the liquid-gas phase transition of hot nuclear matter have been calculated. It is shown that the three-body force provides a repulsive contribution to the equation of state of hot nuclear matter. The repulsive effect of the three-body force becomes more pronounced as the density and temperature increase and consequently inclusion of the three-body force contribution in the calculation reduces the predicted critical temperature from about 16MeV to about 13MeV. By separating the contribution originated from the 2 sigma-exchange process coupled to the virtual excitation of a nucleon-antinucleon pair from the full three-body force, the connection between the three-body force effect and the relativistic correction from the Dirac-Brueckner-Hartree-Fock has been explored. It turns out that the contribution of the 2 sigma-N (N) over bar part is more repulsive than that of the full three-body force and the calculated critical temperature is about 11MeV if only the 2 sigma-N (N) over bar component of the three-body force is included which is lower than the value obtained in the case of including the full three-body force and is close to the value predicted by the Dirac-Brueckner-Hartree-Fock (DBHF). approach. Our result provides a reasonable explanation for the discrepancy between the values of critical temperature predicted from the FTBHF approach including the three-body force and the DBHF approach.
WOS关键词PROTONEUTRON STARS ; BRUECKNER APPROACH ; STATE ; EQUATION
WOS研究方向Physics
语种英语
WOS记录号WOS:000233323300007
出版者SCIENCE PRESS
公开日期2010-10-29
源URL[http://ir.imp.cas.cn/handle/113462/1093]  
专题近代物理研究所_近代物理研究所知识存储(2010之前)
通讯作者Zuo, W
作者单位1.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714
Lu, GC,Zuo, W,Luo, PY,et al. Critical temperature of liquid-gas phase transition for hot nuclear matter and three-body force effect[J]. HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,2005,29(11):1061-1066.
APA Lu, GC,Zuo, W,Luo, PY,&Li, ZH.(2005).Critical temperature of liquid-gas phase transition for hot nuclear matter and three-body force effect.HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,29(11),1061-1066.
MLA Lu, GC,et al."Critical temperature of liquid-gas phase transition for hot nuclear matter and three-body force effect".HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION 29.11(2005):1061-1066.

入库方式: OAI收割

来源:近代物理研究所

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