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Nuclear Theory·nucl-th

Tuesday·September 28, 2021

9 papers—3 primary·6 cross-listed

All9Primary3Cross-lists6
  1. 01

    Effects of hyperons on the deformations of even-even nuclei

    C. F. Chen🇨🇳 · Q. B. Chen🇨🇳 · Xian-Rong Zhou🇨🇳 · Yi-Yuan Cheng🇨🇳 · Ji-Wei Cui🇨🇳 · H.-J. Schulze🇮🇹

    The deformations of multi- hypernuclei corresponding to even-even core nuclei ranging from Be to Ca with 2, 4, 6, and 8 hyperons are studied in the framework of the deformed Skyrme-Hartree-Fock approach. It is found that the deformations are reduced when adding 2 or 8 hyperons, but enhanced when adding 4 or 6 hyperons. These differences are attributed to the fact that hyperons are filled gradually into the three deformed orbits, of which the [110]1/2 orbit is prolately deformed and the degenerate [101]1/2 and [101]3/2 orbits are oblately deformed.

    nucl-thCPC(2022)·18 citations
  2. 02

    Identifying the QCD Phase Transitions via the Gravitational Wave Frequency from Supernova Explosion

    Zhan Bai🇨🇳 · Wei-jie Fu🇨🇳 · Yu-xin Liu🇨🇳

    We investigate the non-radial oscillations of newly born neutron stars (NSs) and strange quark stars (SQSs). This is done with the relativistic nuclear field theory with hyperon degrees of freedom employed to describe the equation of state for the stellar matter in NSs, and with both the MIT bag model and the Nambu--Jona-Lasinio model adopted to construct the configurations of the SQSs. We find that the gravitational-mode (-mode) eigenfrequencies of newly born SQSs are significantly lower than those of NSs, which is independent of models implemented to describe the equation of state for the strange quark matter. Meanwhile, the eigenfrequencies of the other modes of non-radial oscillations, e.g., fundamental ()- and pressure ()-modes, are much larger than those of the -mode, and is related to the stiffness of the equation of states (EoSs). In the light of the first direct observation of gravitational waves, it is promising to employ the gravitational waves to identify the QCD phase transition in high density strong interaction matter.

    nucl-thhep-phApJ(2021)·11 citations
  3. 03

    Spin Quantization in Heavy Ion Collision

    Hua Zheng · Aldo Bonasera

    We analyzed recent experimental data on the disassembly of Si into 7 in terms of a hybrid -cluster model. We calculated the probability of breaking into several -like fragments for high -spin values for identical and non-identical spin zero nuclei. Resonant energies were found for each -value and compared to the data and other theoretical models. Toroidal-like structures were revealed in coordinate and momentum space when averaging over many events at high . The transition from quantum to classical mechanics is highlighted.

    nucl-thnucl-exSymmetry(2021)·7 citations

Affiliations

first authorsco-authorsvia INSPIRE