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Nuclear Theory·nucl-th

Friday·October 9, 2020

11 papers—5 primary·6 cross-listed

All11Primary5Cross-lists6
  1. 06

    [Submitted on 7 Oct 2020] (cross-list from hep-ph)

    Quantum simulation of open quantum systems in heavy-ion collisions

    Wibe A. de Jong🇺🇸 · Mekena Metcalf🇺🇸 · James Mulligan🇺🇸 · Mateusz Płoskoń🇺🇸 · Felix Ringer🇺🇸 · Xiaojun Yao🇺🇸

    We present a framework to simulate the dynamics of hard probes such as heavy quarks or jets in a hot, strongly-coupled quark-gluon plasma (QGP) on a quantum computer. Hard probes in the QGP can be treated as open quantum systems governed in the Markovian limit by the Lindblad equation. However, due to large computational costs, most current phenomenological calculations of hard probes evolving in the QGP use semiclassical approximations of the quantum evolution. Quantum computation can mitigate these costs, and offers the potential for a fully quantum treatment with exponential speedup over classical techniques. We report a simplified demonstration of our framework on IBM Q quantum devices, and apply the Random Identity Insertion Method (RIIM) to account for CNOT depolarization noise, in addition to measurement error mitigation. Our work demonstrates the feasibility of simulating open quantum systems on current and near-term quantum devices, which is of broad relevance to applications in nuclear physics, quantum information, and other fields.

    Comments:
    Published in Phys Rev D
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Experiment (hep-ex); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th); Quantum Physics (quant-ph)
    arXiv:
    2010.03571 [pdf]
    PRD(2021)·68 citations
  2. 07

    [Submitted on 7 Oct 2020] (cross-list from hep-th)

    A New Paradigm for Topological or Rotational Non-Abelian Gauge Fields from Einstein-Skyrme Holography

    Casey Cartwright🇺🇸 · Benjamin Harms🇺🇸 · Matthias Kaminski🇺🇸

    We report analytically known states at non-zero temperature which may serve as a powerful tool to reveal common topological and thermodynamic properties of systems ranging from the QCD phase diagram to topological phase transitions in condensed matter materials. In the holographically dual gravity theory, these are analytic solutions to a five-dimensional non-linear-sigma (Skyrme) model dynamically coupled to Einstein gravity. This theory is shown to be holographically dual to Super-Yang-Mills theory coupled to an -current. All solutions are fully backreacted asymptotically Anti-de Sitter~(AdS) black branes or holes. One family of global AdS black hole solutions contains non-Abelian gauge field configurations with positive integer Chern numbers and finite energy density. Larger Chern numbers increase the Hawking-Page transition temperature. In the holographically dual field theory this indicates a significant effect on the deconfinement phase transition. Black holes with one Hawking temperature can have distinct Chern numbers, potentially enabling topological transitions. A second family of analytic solutions, rotating black branes, is also provided. These rotating solutions induce states with propagating charge density waves in the dual field theory. We compute the Hawking temperature, entropy density, angular velocity and free energy for these black holes/branes. These correspond to thermodynamic data in the dual field theory. For these states the energy-momentum tensor, (non-)conserved current, and topological charge are interpreted.

    Comments:
    v2: added heat capacities (with plot), presentation improved; 48 pages, 5 figures. Comments are welcome!
    Subjects:
    High Energy Physics — Theory (hep-th); Strongly Correlated Electrons (cond-mat.str-el); Nuclear Theory (nucl-th)
    arXiv:
    2010.03578 [pdf]
    JHEP(2021)·7 citations
  3. 08

    [Submitted on 7 Oct 2020] (cross-list from astro-ph.HE)

    Constraining three-nucleon forces with multimessenger data

    Andrea Maselli🇮🇹 · Andrea Sabatucci🇮🇹 · Omar Benhar🇮🇹

    We report the results of a study aimed at inferring direct information on the repulsive three-nucleon potential \textemdash driving the stiffness of the nuclear matter equation of state at supranuclear densities\textemdash from astrophysical observations. Using a Bayesian approach, we exploit the measurements of masses, radii and tidal deformabalities performed by the NICER satellite and the LIGO/Virgo collaboration, as well as the mass of the heaviest observed pulsar, to constrain the strength of . The baseline of our analysis is the widely employed nuclear Hamiltonian comprising the Argonne nucleon-nucleon potential andthe Urbana IX model of three-nucleon potential. The numerical results, largely determined by the bound on the maximum mass, suggest that existing and future facilities have the potential to provide valuable new insight into microscopic nuclear dynamics at supranuclear densities.

    Comments:
    Discussion of the results extended. Various changes to match the version in press on Phys. Rev. C
    Subjects:
    High Energy Astrophysical Phenomena (astro-ph.HE); General Relativity and Quantum Cosmology (gr-qc); Nuclear Theory (nucl-th)
    arXiv:
    2010.03581 [pdf]
    PRC(2021)·26 citations
  4. 09

    [Submitted on 7 Oct 2020] (cross-list from astro-ph.HE)

    Modeling Kilonova Light Curves: Dependence on Nuclear Inputs

    Y. L. Zhu · K. Lund · J. Barnes · T. M. Sprouse · N. Vassh · G. C. McLaughlin · M. R. Mumpower · R. Surman

    The mergers of binary neutron stars, as well as black hole-neutron star systems, are expected to produce an electromagnetic counterpart that can be analyzed to infer the element synthesis that occurred in these events. We investigate one source of uncertainties pertinent to lanthanide-rich outflows: the nuclear inputs to rapid neutron capture nucleosynthesis calculations. We begin by examining thirty-two different combinations of nuclear inputs: eight mass models, two types of spontaneous fission rates, and two types of fission daughter product distributions. We find that such nuclear physics uncertainties typically generate at least one order of magnitude uncertainty in key quantities such as the nuclear heating (one and a half orders of magnitude at one day post-merger), the bolometric luminosity (one order of magnitude at five days post-merger), and the inferred mass of material from the bolometric luminosity (factor of eight when considering the eight to ten days region). Since particular nuclear processes are critical for determining the electromagnetic signal, we provide tables of key nuclei undergoing -decay, -decay, and spontaneous fission important for heating at different times, identifying decays that are common among the many nuclear input combinations.

    Comments:
    29 pages, 17 figures, 4 tables
    Subjects:
    High Energy Astrophysical Phenomena (astro-ph.HE); Nuclear Theory (nucl-th)
    arXiv:
    2010.03668 [pdf]
    ApJ(2021)·112 citations
  5. 10

    [Submitted on 8 Oct 2020] (cross-list from hep-ph)

    Phenomenological constraints on the transport properties of QCD matter with data-driven model averaging

    D. Everett🇺🇸 · W. Ke🇺🇸 · J.-F. Paquet🇺🇸 · G. Vujanovic🇺🇸 · S. A. Bass🇺🇸 · L. Du🇺🇸 · C. Gale🇨🇦 · M. Heffernan🇨🇦 · U. Heinz🇺🇸 · D. Liyanage🇺🇸 · M. Luzum🇧🇷 · A. Majumder🇺🇸 and 36 other authors

    Using combined data from the Relativistic Heavy Ion and Large Hadron Colliders, we constrain the shear and bulk viscosities of quark-gluon plasma (QGP) at temperatures of MeV. We use Bayesian inference to translate experimental and theoretical uncertainties into probabilistic constraints for the viscosities. With Bayesian Model Averaging we account for the irreducible model ambiguities in the transition from a fluid description of the QGP to hadronic transport in the final evolution stage, providing the most reliable phenomenological constraints to date on the QGP viscosities.

    Comments:
    8 pages, 3 figures
    Subjects:
    High Energy Physics — Phenomenology (hep-ph); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
    arXiv:
    2010.03928 [pdf]
    PRL(2021)·256 citations
  6. 11

    [Submitted on 8 Oct 2020] (cross-list from nucl-ex)

    Direct reaction contribution in the very low energy F(p,) reaction

    Lalit Kumar Sahoo · Chinmay Basu

    The direct reaction component of the F(p,) reaction at E=180-600 keV is studied for the data that has become very recently available. This component has been found to be significant in the present work using the direct pickup model in framework of the DWBA formalism and indicate the strong cluster structure of F.

    Subjects:
    Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
    arXiv:
    2010.03937 [pdf]
    IJMPE(2021)·2 citations

Affiliations

first authorsco-authorsvia INSPIRE