Influence of the isovector-scalar channel interaction on neutron star matter with hyperons and antikaon condensation

doi:10.1103/PhysRevC.82.055801

	Influence of the isovector-scalar channel interaction on neutron star matter with hyperons and antikaon condensation
	Shao, Guo-yun 1,2,3; Liu, Yu-xin 1,2,4
刊名	PHYSICAL REVIEW C
	2010-11-04
卷号	82 页码:15
ISSN号	0556-2813
DOI	10.1103/PhysRevC.82.055801
英文摘要	The relativistic mean field approach including isovector-scalar channel (i.e., exchanging delta mesons) interaction is taken to study the properties of neutron star matter including hyperons and antikaon condensation. For hyperonic neutron stars, it shows that the delta-meson channel interaction stiffens the equation of state at lower densities but it softens the equation of state after hyperons appear. This leads to the neutron star having a lower central density and a larger radius than the one with the same mass but without the delta-meson channel interaction. For neutron star matter including both hyperons and antikaon condensation, the delta-meson channel interaction increases the onset density of the antikaon condensation. At the same time, the stability of the kaonic neutron star and its dependence on the kaon optical potential are discussed. For stable kaonic neutron stars with larger radii, those with the inclusion of the delta-meson channel interaction have larger masses than those without the delta-meson interaction, but the result is reversed for those with smaller radii. Calculated results are also compared with neutron star observations. Constraints on the model parameters are then provided.
资助项目	National Natural Science Foundation of China[10425521] ; National Natural Science Foundation of China[10935001] ; Major State Basic Research Development Program[G2007CB815000]
WOS关键词	MEAN-FIELD THEORY ; COLOR SYMMETRY MODEL ; EQUATION-OF-STATE ; KAON CONDENSATION ; DENSITY-DEPENDENCE ; NUCLEAR-EQUATION ; QUARK STARS ; PHASE-TRANSITION ; RECENT PROGRESS ; COMPACT STARS
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000283842900005
资助机构	National Natural Science Foundation of China ; Major State Basic Research Development Program
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/32584]
专题	中国科学院近代物理研究所
通讯作者	Shao, Guo-yun
作者单位	1.Peking Univ, Dept Phys, Beijing 100871, Peoples R China 2.Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China 3.Ist Nazl Fis Nucl, Lab Nazl Sud, I-95125 Catania, Italy 4.Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Shao, Guo-yun,Liu, Yu-xin. Influence of the isovector-scalar channel interaction on neutron star matter with hyperons and antikaon condensation[J]. PHYSICAL REVIEW C,2010,82:15.
APA	Shao, Guo-yun,&Liu, Yu-xin.(2010).Influence of the isovector-scalar channel interaction on neutron star matter with hyperons and antikaon condensation.PHYSICAL REVIEW C,82,15.
MLA	Shao, Guo-yun,et al."Influence of the isovector-scalar channel interaction on neutron star matter with hyperons and antikaon condensation".PHYSICAL REVIEW C 82(2010):15.