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Nuclear Theory·nucl-th

Thursday·November 9, 2023

8 papers—3 primary·5 cross-listed

All8Primary3Cross-lists5
  1. 01

    [Submitted on 8 Nov 2023]

    Dynamics of causal hydrodynamic fluctuations in an expanding system

    Shin-ei Fujii🇯🇵 · Tetsufumi Hirano🇯🇵

    We develop a framework of causal hydrodynamic fluctuations in one-dimensional expanding system performing linearisation of the hydrodynamic equations around the boost invariant solution. Through the description of space-time evolution of thermodynamic variables and flow velocity, we find a novel phenomenon that the structure of thermodynamic variables is almost frozen. We also show that two-particle correlation functions of final hadrons after freezeout are closely related with the mass of hadrons and properties of the medium such as viscosity, relaxation time and equation of state.

    Comments:
    4 pages, 2 figures, proceedings of Quark Matter 2023, Houston, Texas, 3-9 Sep. 2023, Flash talk
    Subjects:
    Nuclear Theory (nucl-th); High Energy Physics — Phenomenology (hep-ph); Nuclear Experiment (nucl-ex)
    arXiv:
    2311.04466 [pdf]
    EPJ Web Conf.(2024)·1 citation
  2. 02

    [Submitted on 8 Nov 2023]

    Fully-heavy baryons in vacuum and hot QCD medium

    Jiaxing Zhao🇫🇷 · Shuzhe Shi🇨🇳

    We study the properties of fully-heavy baryons in the vacuum and the hot QCD medium, which is created in relativistic heavy-ion collisions. Masses and wave functions of , , , and up to the second radial excited states are obtained by solving the three-body Schrödinger equation with Hyperspherical Harmonics method. With parameters completely fixed by fitting quarkonium boundstates in vacuum, we predicted the masses for , , and states of fully-heavy baryons. We also computed the temperature dependence of baryon masses and the thermal widths in a hot QCD medium. These properties are important to precise study of fully-heavy baryon production in heavy ion collisions.

    Comments:
    9 pages, 3 figures
    Subjects:
    Nuclear Theory (nucl-th); High Energy Physics — Phenomenology (hep-ph)
    arXiv:
    2311.04594 [pdf]
    PRC(2024)·13 citations
  3. 03

    [Submitted on 8 Nov 2023]

    Quick Guides for Use of the CompOSE Data Base

    Veronica Dexheimer · Marco Mancini · Micaela Oertel · Constanca Providencia · Laura Tolos · Stefan Typel

    We present a combination of two quick guides aimed at summarizing relevant information about the CompOSE nuclear equation of state repository. The first is aimed at nuclear physicists and describes how to provide standard equation of state tables. The second quick guide is meant for users and describes the basic procedures to obtain customized tables with equation of state data. Several examples are included to help providers and users to understand and benefit from the CompOSE database.

    Comments:
    Slightly updated from published version: Section 2.2.3. Stellar Information table has one extra line and optional additional columns
    Subjects:
    Nuclear Theory (nucl-th); High Energy Astrophysical Phenomena (astro-ph.HE); Solar and Stellar Astrophysics (astro-ph.SR); Nuclear Experiment (nucl-ex)
    arXiv:
    2311.04715 [pdf]
    Particles(2022)·18 citations

Affiliations

first authorsco-authorsvia INSPIRE