PaperPanorama
FAQ

Nuclear Theory·nucl-th

Monday·April 11, 2022

4 papers—2 primary·2 cross-listed

All4Primary2Cross-lists2
  1. 03

    [Submitted on 8 Apr 2022] (cross-list from hep-lat)

    Emergent phenomena from centre vortices

    Waseem Kamleh🇦🇺 · James Biddle🇦🇺 · Derek B. Leinweber🇦🇺 · Finn M. Stokes🇦🇺

    Quark confinement is perhaps the most important emergent property of the theory of quantum chromodynamics. Herein we review some key aspects of centre vortices in SU(3) lattice gauge theory. Starting from the original Monte Carlo gauge fields, a vortex identification procedure yields vortex-removed and vortex-only backgrounds. The comparison between the original `untouched' Monte Carlo gauge fields and these so called vortex-modified ensembles has provided a variety of results that support the notion that centre vortices are fundamental to confinement in pure gauge theory. For the first time we perform direct numerical tests of the response of centre vortices to the presence of dynamical quarks in SU(3).

    Comments:
    9 pages, 5 figures; Proceedings of 38th International Symposium on Lattice Field Theory (LATTICE2021), 26-30 July 2021, Zoom/Gather@MIT, USA
    Subjects:
    High Energy Physics — Lattice (hep-lat); Nuclear Theory (nucl-th)
    arXiv:
    2204.03816 [pdf]
    PoS(2022)·1 citation
  2. 04

    [Submitted on 8 Apr 2022] (cross-list from hep-ph)

    Transport coefficients of heavy quarkonia comparing with heavy quark coefficients

    Juhee Hong🇰🇷 · Su Houng Lee🇰🇷

    We revisit the transport coefficients of heavy quarkonia moving in high-temperature QCD plasmas. The thermal width and mass shift for heavy quarkonia are closely related to the momentum diffusion coefficient and its dispersive counterpart for heavy quarks, respectively. For quarkonium at rest in plasmas the longitudinal gluon part of the color-singlet self-energy diagram is sufficient to determine the leading-order thermal width, whereas the momentum dependence is obtained from the transverse gluon channel. Using the quarkonium-gluon effective vertex based on the dipole interaction of color charges, we discuss the damping rate, the effective rest and kinetic mass shifts of slowly moving quarkonia and compare with the corresponding coefficients of heavy quarks.

    Comments:
    14 pages, 2 figures
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
    arXiv:
    2204.04180 [pdf]
    PLB(2022)·1 citation

Affiliations

first authorsco-authorsvia INSPIRE