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Nuclear Theory·nucl-th

Friday·October 8, 2021

8 papers—3 primary·5 cross-listed

All8Primary3Cross-lists5
  1. 01

    [Submitted on 6 Oct 2021]

    Further developments of a multi-phase transport model for relativistic nuclear collisions

    Zi-Wei Lin🇺🇸 · Liang Zheng🇨🇳

    A multi-phase transport (AMPT) model was constructed as a self-contained kinetic theory-based description of relativistic nuclear collisions as it contains four main components: the fluctuating initial condition, a parton cascade, hadronization, and a hadron cascade. Here, we review the main developments after the first public release of the AMPT source code in 2004 and the corresponding publication that described the physics details of the model at that time. We also discuss possible directions for future developments of the AMPT model to better study the properties of the dense matter created in relativistic collisions of small or large systems.

    Comments:
    31 pages, 20 figures
    Subjects:
    Nuclear Theory (nucl-th)
    arXiv:
    2110.02989 [pdf]
    Nucl.Sci.Tech.(2021)·142 citations
  2. 02

    [Submitted on 7 Oct 2021]

    Light kaonic atoms: from "corrected" to "summed up" Deser formula

    N.V. Shevchenko🇨🇿

    Accuracy of "corrected Deser" and "summed up Deser" formulas was checked for the and systems. It was found that the last one is much more accurate and should be used for connection the level shift to the corresponding scattering length.

    Comments:
    3 pages, 2 tables; small changes in the text, several references were added
    Subjects:
    Nuclear Theory (nucl-th)
    arXiv:
    2110.03505 [pdf]
    Few Body Syst.(2022)·7 citations
  3. 03

    [Submitted on 7 Oct 2021]

    Study of nonlocality effects in direct capture reactions with Lagrange-mesh -matrix method

    Nguyen Hoang Phuc · Nguyen Tri Toan Phuc · Do Cong Cuong

    We apply the Lagrange-mesh -matrix method to calculate the -factor for the CN and OF direct radiative capture reactions. By comparing the astrophysical -factors calculated with nonlocal and local potentials, we investigate the nonlocality effects coming from the nuclear potentials in the direct capture reactions. Our calculations are in good agreement with the experimental data and indicate a nonnegligible difference in the results of local and nonlocal potentials. The use of small diffuseness narrow potentials also provides a remarkably good fit in the case with multiple broad resonances. Our findings suggest that the nonlocal potential improves the calculated results although the difference between the local and nonlocal potentials is smaller than uncertainties from other sources. We propose the nonlocality potential should be used in the potential model calculation of future astrophysics rates evaluation.

    Comments:
    21 pages, 3 figures
    Subjects:
    Nuclear Theory (nucl-th); Nuclear Experiment (nucl-ex)
    arXiv:
    2110.03598 [pdf]
    IJMPE(2021)·4 citations

Affiliations

first authorsco-authorsvia INSPIRE