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Single--particle spectra of $\Lambda $ and $\Sigma $ hypernuclei are calculated within a relativistic mean--field theory. The hyperon couplings used are compatible with the $\Lambda $ binding in saturated nuclear matter, neutron-star masses…

Nuclear Theory · Physics 2008-11-26 N. K. Glendenning , D. Von-Eiff , M. Haft , H. Lenske , M. K. Weigel

We study the properties of double-$\Lambda$ hypernuclei in the relativistic mean-field theory, which has been successfully used for the description of stable and unstable nuclei. With the meson-hyperon couplings determined by the…

Nuclear Theory · Physics 2008-11-26 H. Shen , F. Yang , H. Toki

In this paper, we calculated the binding energy per baryon of the $\Lambda$ hypernuclei systemically, using the relativistic mean field theory (RMF) in a statistic frame. Some resemble properties are found among most of the hypernuclei…

Nuclear Theory · Physics 2009-07-30 Lan Mi-Xiang , Li Lei , Ning Ping-Zhi

The properties of strangeness neutron star are studied within relativistic mean-field (RMF) model via including a logarithmic interaction as a function of scalar meson field. This logarithmic interaction, named as the $\sigma$-cut…

Nuclear Theory · Physics 2018-02-07 Ying Zhang , Jinniu Hu , Peng Liu

The density dependent relativistic hadron field theory is extended to also describe strange systems. It is seen that the application to hypernuclei works extremely well. Important spin orbit effects in lambda hypernuclei are studied and…

Nuclear Theory · Physics 2007-05-23 C. Keil , F. Hofmann , H. Lenske

The neutron star as a supernova remnant is attracting high attention recently due to the gravitation wave detection and precise measurements about its mass and radius. In the inner core region of the neutron star, the strangeness degrees of…

Nuclear Theory · Physics 2022-03-24 Kaixuan Huang , Jinniu Hu , Ying Zhang , Hong Shen

The charmed $ \Lambda_{c}^{+} $ hypernuclei are investigated within the framework of the density-dependent relativistic mean-field (DDRMF) theory. Starting from the empirical hyperon potential in symmetric nuclear matter, obtained through…

Nuclear Theory · Physics 2024-12-30 Wei Yang , Shi Yuan Ding , Bao Yuan Sun

This thesis focuses on a variety of active research topics, such as nuclear matter, neutron stars, and phase transition within the framework of the RMF model. We use the previously successful effective field theory-driven Relativistic Mean…

Nuclear Theory · Physics 2022-06-07 Ishfaq Ahmad Rather

Bound, strange, neutral superheavy nuclei, stable against strong decay, may exist. A model effective field theory calculation of the surface energy and density of such systems is carried out assuming vector meson couplings to conserved…

Nuclear Theory · Physics 2009-11-07 Jeff McIntire

Several aspects about $\Lambda$-hypernuclei in the relativistic mean field theory, including the effective $\Lambda$-nucleon coupling strengths based on the successful effective nucleon-nucleon interaction PK1, hypernuclear magnetic moment…

Nuclear Theory · Physics 2011-05-04 Chunyan Song , Jiangming Yao , Hongfeng Lv , Jie Meng

Hypernuclei have been studied within the framework of Relativistic Mean Field theory. The force FSU Gold has been extended to include hyperons. The effective hyperon-nucleon and nucleon-nucleon interactions have been obtained by fitting…

Nuclear Theory · Physics 2012-07-30 Bipasha Bhowmick , Abhijit Bhattacharyya , G. Gangopadhyay

We report the recent progress in relativistic mean-field (RMF) and beyond approaches for the low-energy structure of deformed hypernuclei. We show that the $\Lambda$ hyperon with orbital angular momentum $\ell=0$ (or $\ell>1$) generally…

Nuclear Theory · Physics 2019-09-04 J. M. Yao , H. Mei , K. Hagino , T. Motoba

The shapes of light normal nuclei and $\Lambda$ hypernuclei are investigated in the $(\beta, \gamma)$ deformation plane by using a newly developed constrained relativistic mean field (RMF) model. As examples, the results of some C, Mg, and…

Nuclear Theory · Physics 2015-03-19 Bing-Nan Lu , En-Guang Zhao , Shan-Gui Zhou

A new parameterization for an effective non-linear Lagrangian density of relativistic mean field (RMF) theory is proposed, which is able to provide an excellent description not only for the properties of stable nuclei but also for those far…

Nuclear Theory · Physics 2008-11-26 G. A. Lalazissis , J. König , P. Ring

Neutron and proton driplines of single-$\Lambda$ and double-$\Lambda$ hypernuclei, $\Xi^{-}$ hypernuclei as well as normal nuclei are studied within a relativistic mean field approach using an extended form of the FSU Gold Lagrangian…

Nuclear Theory · Physics 2013-02-12 Bipasha Bhowmick , Abhijit Bhattacharyya , G. Gangopadhyay

Based on relativistic mean field (RMF) models, we study finite $\Lambda$-hypernuclei and massive neutron stars. The effective $N$-$N$ interactions PK1 and TM1 are adopted, while the $N$-$\Lambda$ interactions are constrained by reproducing…

Nuclear Theory · Physics 2018-03-14 Ting-Ting Sun , Cheng-Jun Xia , Shi-Sheng Zhang , M. S. Smith

The Relativistic Hartree Bogoliubov model in coordinate space, with finite range pairing interaction, is applied to the description of $\Lambda$-hypernuclei with a large neutron excess. The addition of the $\Lambda$ hyperon to Ne isotopes…

Nuclear Theory · Physics 2008-11-26 D. Vretenar , W. Pöschl , G. A. Lalazissis , P. Ring

A systematic study of the effects of hyperon couplings on hyperon superfluidity is conducted by using the relativistic mean field model. Combining the slope of symmetry energy, the hyperon couplings are determined in two ways -- by the…

Nuclear Theory · Physics 2023-10-04 Zhong-Hao Tu , Shan-Gui Zhou

A recently introduced relativistic nuclear energy density functional, constrained by features of low-energy QCD, is extended to describe the structure of hypernuclei. The density-dependent mean field and the spin-orbit potential of a…

Nuclear Theory · Physics 2008-11-26 P. Finelli

We analyze the effects of $\delta-$ meson on hypernuclei within the frame-work of relativistic mean field theory. The $\delta-$ meson is included into the Lagrangian for hypernuclei. The extra nucleon-meson coupling ($g_\delta$) affects the…

Nuclear Theory · Physics 2015-06-18 M. Ikram , S. K. Singh , S. K. Biswal , S. K. Patra
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