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Roles of isoscalar hyperons in probing the density dependence of the nuclear symmetry energy
Jiang, WZ; Jiang, WZ (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
2006
Source PublicationPHYSICS LETTERS B
ISSN0370-2693
Volume642Issue:40545Pages:28
AbstractThe role of the isoscalar hyperon A in probing the density dependence of the nuclear symmetry energy is studied in multi-A hypernuclei, hyperon-rich matter and neutron stars in relativistic models. Relationships between the properties of three types of objects and the neutron thickness in Pb-208 are established with respect to the isoscalar-isovector coupling that modifies the density dependence of the symmetry energy. The exotic isotopes far from the neutron drip line can be stabilized by filling in considerable A hyperons. The difference of the binding energy of multi-A hypernuclei from different models is attributed to different symmetry energies. The isovector potential together with the neutron thickness in multi-A hypernuclei investigated is very sensitive to the isoscalar-isovector coupling. The large sensitivity of the A hyperon fraction to the isoscalar-isovector coupling occurs at about 2-3(rho 0) in beta equilibrated hyperon-rich matter. In neutron stars with hyperonization, an on-off effect with respect to the isoscalar-isovector coupling exists for the neutron star radius. (c) 2006 Elsevier B.V. All rights reserved.
KeywordHypernuclei Bulk Matter Neutron Stars Relativistic Mean Field Model
Subject AreaPhysics
Indexed BySCI
Language英语
Funding Project应物所项目组
WOS IDWOS:000241971400007
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/8184
Collection中科院上海应用物理研究所2004-2010年
Corresponding AuthorJiang, WZ (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
Recommended Citation
GB/T 7714
Jiang, WZ,Jiang, WZ . Roles of isoscalar hyperons in probing the density dependence of the nuclear symmetry energy[J]. PHYSICS LETTERS B,2006,642(40545):28.
APA Jiang, WZ,&Jiang, WZ .(2006).Roles of isoscalar hyperons in probing the density dependence of the nuclear symmetry energy.PHYSICS LETTERS B,642(40545),28.
MLA Jiang, WZ,et al."Roles of isoscalar hyperons in probing the density dependence of the nuclear symmetry energy".PHYSICS LETTERS B 642.40545(2006):28.
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