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Nuclear Theory·nucl-th

Thursday·February 8, 2018

4 papers—2 primary·2 cross-listed

All4Primary2Cross-lists2
  1. 03

    [Submitted on 7 Feb 2018] (cross-list from hep-lat)

    Perturbative matching of continuum and lattice quasi-distributions

    Tomomi Ishikawa🇨🇳

    Matching of the quasi parton distribution functions between continuum and lattice is addressed using lattice perturbation theory specifically with Wilson-type fermions. The matching is done for nonlocal quark bilinear operators with a straight Wilson line in a spatial direction. We also investigate operator mixing in the renormalization and possible O(a) operators for the nonlocal operators based on a symmetry argument on lattice.

    Comments:
    8 pages, 2 figures, talk presented at the 35th International Symposium on Lattice Field Theory, 18-24 June 2017, Granada, Spain
    Subjects:
    High Energy Physics — Lattice (hep-lat); High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
    arXiv:
    1802.02333 [pdf]
    EPJ Web Conf.(2018)·2 citations
  2. 04

    [Submitted on 7 Feb 2018] (cross-list from hep-ph)

    Viscous effects on the dynamical evolution of QCD matter during the first-order confinement phase transition in heavy-ion collisions

    Bohao Feng🇨🇳 · Carsten Greiner🇩🇪 · Shuzhe Shi🇺🇸 · Zhe Xu🇨🇳

    We investigate viscous effects on the dynamical evolution of QCD matter during the first-order phase transition, which may happen in heavy-ion collisions. We first obtain the first-order phase transition line in the QCD phase diagram under the Gibbs condition by using the MIT bag model and the hadron resonance gas model for the equation of state of partons and hadrons. The viscous pressure, which corresponds to the friction in the energy balance, is then derived from the energy and net baryon number conservation during the phase transition. We find that the viscous pressure relates to the thermodynamic change of the two-phase state and thus affects the timescale of the phase transition. Numerical results are presented for demonstrations.

    Comments:
    7 pages, 5 figures; title, some text and Figs. 1 and 2 are modified, typos fixed; published version
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
    arXiv:
    1802.02494 [pdf]
    PLB(2018)·10 citations

Affiliations

first authorsco-authorsvia INSPIRE