PaperPanorama
FAQ

Nuclear Theory·nucl-th

Wednesday·October 3, 2018

7 papers—4 primary·3 cross-listed

All7Primary4Cross-lists3
  1. 01

    [Submitted on 2 Oct 2018]

    Simulating the Chiral Magnetic Wave in a Box System

    Wen-Hao Zhou🇨🇳 · Jun Xu🇨🇳

    The chiral magnetic wave from the interplay between the chiral magnetic effect and the chiral separation effect is simulated in a box system with the periodic boundary condition based on the chiral kinetic equations of motion. Simulation results are compared with available limits from theoretical derivations, and effects of the temperature, the magnetic field, and the specific shear viscosity on the key properties of the chiral magnetic wave are discussed. Our study serves as a baseline for further simulations of chiral anomalies in relativistic heavy-ion collisions.

    Comments:
    7 pages, 5 figures
    Subjects:
    Nuclear Theory (nucl-th); High Energy Physics — Experiment (hep-ex); Nuclear Experiment (nucl-ex)
    arXiv:
    1810.01030 [pdf]
    PRC(2018)·22 citations
  2. 02

    [Submitted on 2 Oct 2018]

    Event by event fluctuations of the source shape: implications for the Levy shape, and Event Shape Sorting

    Boris Tomasik🇸🇰 · Jakub Cimerman🇨🇿

    In the first part of this contribution we show that the Levy stable shape of the correlation function can be caused by averaging of the measured correlation functions over a large number of events. In the second part it is demonstrated how a sample of events sorted by Event Shape Sorting technique exhibits different azimuthal dependence of correlation radii in each event class.

    Comments:
    6 pages, 5 figures, proceedings of the XIII Workshop on Particle Correlations and Femtoscopy, Cracow, 22-26 May 2018, two references updated
    Subjects:
    Nuclear Theory (nucl-th); High Energy Physics — Phenomenology (hep-ph); Nuclear Experiment (nucl-ex)
    arXiv:
    1810.01157 [pdf]
    0 citations
  3. 03

    [Submitted on 30 Sept 2018]

    Quartetting Wave Function Approach to Ne: Shell Model and Local Density Approximation

    G. Röpke

    We investigate -like correlations in Ne. A quartet of nucleons (different spin/isospin) is moving in a mean field produced by the O core nucleus. Improving the Thomas-Fermi model (local density approach), a shell model is considered for the core nucleus. The effective potential of the -like quartet and the wave function for the center-of-mass (c.o.m.) motion are calculated and compared with other approaches.

    Comments:
    10 pages, 7 figures. arXiv admin note: substantial text overlap with arXiv:1707.04517
    Subjects:
    Nuclear Theory (nucl-th)
    arXiv:
    1810.01274 [pdf]
    AIP Conf.Proc.(2018)·3 citations
  4. 04

    [Submitted on 2 Oct 2018]

    Effect of the Quark-Gluon Vertex on Dynamical Chiral Symmetry Breaking

    M. Atif Sultan🇵🇰 · Khépani Raya🇨🇳 · Faisal Akram🇵🇰 · Adnan Bashir🇲🇽 · Bilal Masud🇵🇰

    In this work, we investigate how the details of the quark-gluon interaction vertex affect the quantitative description of chiral symmetry breaking through the gap equation for quarks. We start from two gluon propagator models widely used in literature and constructed in direct connection with our gradually improved understanding of infrared quantum chromodynamics coupled with its exact one-loop limit. The gap equation is then solved by employing a variety of vertex \emph{Ansätze}, which have been constructed in order to implement some of the key aspects of quantum chromodynamics, namely, multiplicative renormalizability of the quark propagator, gauge invariance, matching with perturbation theory in the weak coupling regime, independence from unphysical kinematic singularities as well as manifestly correct transformation properties under charge conjugation and parity operations. On general grounds, all truncation schemes exhibit the same qualitative and quantitative pattern of chiral symmetry breaking, ensuring the overall robustness of this approach and its potentially reliable description of the hadron spectrum and properties.

    Comments:
    14 pages. Text matching the published version in Physical Review D
    Subjects:
    Nuclear Theory (nucl-th); High Energy Physics — Phenomenology (hep-ph)
    arXiv:
    1810.01396 [pdf]
    PRD(2021)·25 citations
  5. 05

    [Submitted on 1 Oct 2018] (cross-list from nucl-ex)

    Recent Results on Heavy Quark Production in High Energy Nucleus Collisions

    Xin Dong🇺🇸

    The goal of the ultra-relativistic heavy ion program is to study Quantum Chromodynamics under finite temperature and density conditions. After a couple of decades of experiment, the focus at the top RHIC and the LHC energy has evolved to quantitative understanding of properties of the hot and dense medium, namely the strongly-coupled Quark Gluon Plasma (sQGP) created in these heavy-ion collisions, and to constrain transport parameters of the sQGP medium. Heavy quarks offer unique insights towards detailed understanding of the sQGP properties due to their large masses. Recent collider and detector advances have enabled precision measurements of heavy quark hadron production in heavy-ion collisions. In this talk, I will review recent results from heavy quark production measurements at RHIC and the LHC. These high quality data will offer stringent constraints on theoretical model calculations and help precision determination of QGP medium transport parameters. Finally, I look forward to a more prospective future of the heavy quark program with further improved detectors at both RHIC and the LHC.

    Comments:
    Talk presented CIPANP2018. 12 pages, LaTeX, 5 figures
    Subjects:
    Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
    arXiv:
    1810.00996 [pdf]
    4 citations
  6. 06

    [Submitted on 2 Oct 2018] (cross-list from hep-ph)

    Open-Flavour Mesons from the Angle of Bethe, Dyson, Salpeter, Schwinger, et al

    Thomas Hilger🇦🇹 · María Gómez-Rocha🇮🇹 · Andreas Krassnigg🇦🇹 · Wolfgang Lucha🇦🇹

    Recently, we completed a comprehensive investigation of a huge part of the entire meson spectrum by considering both quarkonia and open-flavour mesons by means of a single common framework which unites the homogeneous Bethe-Salpeter equation that describes mesons as quark-antiquark bound states and the Dyson-Schwinger equation that governs the full quark propagator: Adopting two (as a matter of fact, not extremely diverse) models that attempt to grasp all principal aspects of the effective strong interactions entering identically in both these equations, we derived within this unique setup, for all mesons analysed, their masses and leptonic decay constants as well as, for the pseudoscalar ones among these mesons, their in-hadron condensates. Here, as a kind of promotion or teaser, we give but a few examples of the resulting collections of data, laying the main emphasis on the dependence of our insights on the effective-interaction model underlying all such outcomes.

    Comments:
    8 pages, 6 figures, contributed to "XIII Quark Confinement and the Hadron Spectrum - Confinement2018" (31 July - 6 August 2018, Maynooth University, Ireland)
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Experiment (hep-ex); Nuclear Theory (nucl-th)
    arXiv:
    1810.01197 [pdf]
    PoS(2018)·1 citation
  7. 07

    [Submitted on 1 Oct 2018] (cross-list from hep-ph)

    Magnetic field dependence of Delta isobars properties in a Skyrme model

    Bing-Ran He🇨🇳

    The properties of isobars in a uniform magnetic field are investigated. In the weak magnetic field region, the general relations between magnetic moment of nucleons and isobars are given. In the strong magnetic field region, the mass and size of isobars depend on the increasing of magnetic field strength in different ways: the effective mass of , and first decreases and then increases, consequently, the size of , and first increases and then decreases; whereas, the effective mass of always increases, and consequently, the size of always decreases. The estimation shows in the core part of the magnetar, the equation of state for isobars depends on the magnetic field, which affects the mass limit of the magnetar.

    Comments:
    5 pages, 4 figures
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Lattice (hep-lat); High Energy Physics — Theory (hep-th); Nuclear Theory (nucl-th)
    arXiv:
    1810.01289 [pdf]
    PRD(2019)·3 citations

Affiliations

first authorsco-authorsvia INSPIRE