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Nuclear Theory·nucl-th

Tuesday·December 21, 2021

10 papers—3 primary·7 cross-listed

All10Primary3Cross-lists7
  1. 01

    [Submitted on 20 Dec 2021]

    Specific heat and its high-order moments in relativistic heavy-ion collisions from a multiphase transport model

    Ru-Xin Cao🇨🇳 · Song Zhang🇨🇳 · Yu-Gang Ma🇨🇳

    Energy dependence of specific heat extracted from temperature fluctuation of Au + Au collisions at = 7.7 GeV to 200 GeV was investigated by using a multiphase transport (AMPT) model. The results were compared with those from other models and some differences at low were found. To explain the above differences and describe the properties of the hot dense matter at low , a new quantity was derived for describing specific heat in heavy-ion collisions. It was found that, by using together with its high order moments (skewness and kurtosis), thermal properties of the hot dense matter can be described and different thermal properties with or without parton process can be clearly distinguished. The proposed observable provides a way to learn the property of QCD matter % phase transition %along with critical point in heavy-ion collisions.

    Comments:
    10 pages, 8 figures; Physical Review C (accepted)
    Subjects:
    Nuclear Theory (nucl-th); High Energy Physics — Phenomenology (hep-ph); Nuclear Experiment (nucl-ex)
    arXiv:
    2112.10299 [pdf]
    PRC(2022)·13 citations
  2. 02

    [Submitted on 20 Dec 2021]

    Short range correlations in the extended quantum molecular dynamics model

    Lei Shen · Bo-Son Huang · Yu-Gang Ma

    Short-range potential has been added into an extended quantum molecular dynamics (EQMD) model. The RMS radius, binding energy and momentum distribution of C with different initial structures and short-range potential parameters have been checked. The separation energy of C(p,2p)B reaction is calculated and compared with the experimental data, it indicates that our modified EQMD model can be taken as a reliable tool for studying proton pair knock-out reaction. Furthermore, the short range correlation effects on emission time and momentum spectrum of two protons are discussed. Finally, the momentum correlation function of the emitted proton pair is calculated by the Lednicky and Lyuboshitz's analytical method. The result explains that short-range repulsion causes high momentum tail and weakens the momentum correlation function.

    Comments:
    8 pages, 6 figures; accepted by Physical Review C
    Subjects:
    Nuclear Theory (nucl-th); Nuclear Experiment (nucl-ex)
    arXiv:
    2112.10348 [pdf]
    PRC(2022)·17 citations
  3. 03

    [Submitted on 20 Dec 2021]

    Linking partial dynamical symmetry to nuclear energy density functionals

    A. Leviatan · N. Gavrielov · K. Nomura

    We use self-consistent mean-field methods in combination with the interacting boson model (IBM) of nuclei, to establish a linkage between universal energy density functionals (EDFs) and partial dynamical symmetry (PDS). An application to Er shows that IBM Hamiltonians derived microscopically from known nonrelativistic and relativistic EDFs in this region, conform with SU(3)-PDS.

    Comments:
    12 pages, 4 figures, 1 table, Proceedings International Workshop "Shapes and Dynamics of Atomic Nuclei: Contemporary Aspects" (SDANCA-21), September 16-18, 2021, Sofia, Bulgaria
    Subjects:
    Nuclear Theory (nucl-th)
    arXiv:
    2112.10540 [pdf]
    Bulg.J.Phys.(2022)·2 citations

Affiliations

first authorsco-authorsvia INSPIRE