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delta MESON EFFECTS ON ASYMMETRIC NUCLEAR MATTER
刘波(理); Liu, B; Di Toro, M; Greco, V
2008
发表期刊INTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS
卷号17期号:9页码:1815-1824
通讯作者[Liu, B.] Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China ; [Liu, B.] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China ; [Di Toro, M. ; Greco, V.] Lab Nazl Sud, I-95123 Catania, Italy ; [Di Toro, M. ; Greco, V.] Univ Catania, I-95124 Catania, Italy
文章类型Article; Proceedings Paper
摘要The impact of a delta meson field (the scalar-isovector channel) on asymmetric nuclear matter is studied within relativistic mean-field (RMF) models with both constant and density dependent (DD) nucleon-meson couplings. The Equation of State (EOS) for asymmetric nuclear matter and the neutron star properties by the different models are compared. We find that the delta-field in the constant coupling scheme leads to a larger repulsion in dense neutron-rich matter and to a definite splitting of proton and neutron effective masses, finally influencing the stability of the neutron stars. A broader analysis of possible delta-field effects is achieved considering also density dependent nucleon-meson coupling. A remarkable effect on the relation between mass and radius for the neutron stars is seen, showing a significant reduction of the radius along with a moderate mass reduction due to the increase of the effective delta coupling in high density regions.
学科领域Physics
研究领域[WOS]Physics ; Physics
DOI10.1142/S0218301308010805
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语种英语
研究领域[WOS]Physics ; Physics
WOS类目Physics, Nuclear ; Physics, Particles & Fields
WOS记录号WOS:000261388500018
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被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/239538
专题理论物理室
作者单位中国科学院高能物理研究所
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GB/T 7714
Liu B,Liu, B,Di Toro, M,et al. delta MESON EFFECTS ON ASYMMETRIC NUCLEAR MATTER[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS,2008,17(9):1815-1824.
APA 刘波,Liu, B,Di Toro, M,&Greco, V.(2008).delta MESON EFFECTS ON ASYMMETRIC NUCLEAR MATTER.INTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS,17(9),1815-1824.
MLA 刘波,et al."delta MESON EFFECTS ON ASYMMETRIC NUCLEAR MATTER".INTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS 17.9(2008):1815-1824.
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