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Nuclear Theory·nucl-th

Wednesday·January 6, 2021

4 papers—2 primary·2 cross-listed

All4Primary2Cross-lists2
  1. 01

    [Submitted on 29 Dec 2020]

    A model investigation of the longitudinal broadening of the transverse momentum two-particle correlator

    Niseem Magdy🇺🇸 · Roy A. Lacey🇺🇸

    The Multi-Phase Transport model (AMPT) is used to investigate the longitudinal broadening of the transverse momentum two-particle correlator , and its utility to extract the specific shear viscosity, , of the quark-gluon plasma formed in ultra-relativistic heavy ion collisions. The results from these model studies indicate that the longitudinal broadening of is sensitive to the magnitude of . However, reliable extraction of the longitudinal broadening of the correlator requires the suppression of possible self-correlations associated with the definition of the collision centrality.

    Comments:
    6 pages, 5 figures, Accepted in Physical Review C
    Subjects:
    Nuclear Theory (nucl-th)
    arXiv:
    2101.01555 [pdf]
    PRC(2021)·8 citations
  2. 02

    [Submitted on 5 Jan 2021]

    Chiral Effective Field Theory and the High-Density Nuclear Equation of State

    C. Drischler🇺🇸 · J.W. Holt🇺🇸 · C. Wellenhofer🇩🇪

    Born in the aftermath of core collapse supernovae, neutron stars contain matter under extraordinary conditions of density and temperature that are difficult to reproduce in the laboratory. In recent years, neutron star observations have begun to yield novel insights into the nature of strongly interacting matter in the high-density regime where current theoretical models are challenged. At the same time, chiral effective field theory has developed into a powerful framework to study nuclear matter properties with quantified uncertainties in the moderate-density regime for modeling neutron stars. In this article, we review recent developments in chiral effective field theory and focus on many-body perturbation theory as a computationally efficient tool for calculating the properties of hot and dense nuclear matter. We also demonstrate how effective field theory enables statistically meaningful comparisons between nuclear theory predictions, nuclear experiments, and observational constraints on the nuclear equation of state.

    Comments:
    additional references and minor improvements; 31 pages, 8 figures; invited review prepared for Annu. Rev. Nucl. Part. Sci. (2021)
    Subjects:
    Nuclear Theory (nucl-th); High Energy Astrophysical Phenomena (astro-ph.HE); Solar and Stellar Astrophysics (astro-ph.SR); High Energy Physics — Phenomenology (hep-ph); Nuclear Experiment (nucl-ex)
    arXiv:
    2101.01709 [pdf]
    Ann.Rev.Nucl.Part.Sci.(2021)·249 citations

Affiliations

first authorsco-authorsvia INSPIRE