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Nuclear Theory·nucl-th

Thursday·August 8, 2019

10 papers—3 primary·7 cross-listed

All10Primary3Cross-lists7
  1. 01

    Review of opportunities at the HESR-Collider with PANDA at FAIR

    Leonid Frankfurt🇮🇱 · Mark Strikman🇺🇸 · Alexei Larionov🇩🇪 · Andreas Lehrach🇩🇪 · Rudolf Maier🇩🇪 · Hendrik van Hees🇩🇪 · Christian Spieles🇩🇪 · Volodymyr Vovchenko🇩🇪 · Horst Stoecker🇩🇪

    Exciting new scientific opportunities are presented for the PANDA detector at the High Energy Storage Ring in the redefined collider mode, HESR-C, at the Facility for Antiproton and Ion Research (FAIR) in Europe. The high luminosity, cm s, and a wide range of intermediate and high energies, up to 30 GeV for collisions will allow to explore a wide range of exciting topics in QCD, including the study of the production of excited open charm and bottom states, nuclear bound states containing heavy (anti)quarks, the interplay of hard and soft physics in the dilepton production, probing short-range correlations in nuclei, and the exploration of the early, complete -p-annihilation phase, where an intially pure Yang-Mills gluon plasma is formed.

    nucl-thhep-phnucl-exEPJA(2020)·9 citations
  2. 02

    Nuclear response at zero and finite temperature

    Elena Litvinova🇺🇸 · Peter Schuck🇫🇷 · Herlik Wibowo🇺🇸

    We present some recent developments on the nuclear many-body problem, such as the treatment of high-order correlations and finite temperature in the description of in-medium two-nucleon propagators. In this work we discuss two-time propagators of the particle-hole type, which describe the response of finite nuclei to external probes without nucleon transfer. The general theory is formulated in terms of the equation of motion method for these propagators with the only input from the bare nucleon-nucleon interaction. The numerical implementation was performed on the basis of the effective mason-nucleon Lagrangian in order to study the energy-dependent kernels of different complexity. The finite-temperature extension of the theory with configurations is applied to a study of the multipole response of medium-mass nuclei.

    nucl-thEPJ Web Conf.(2019)·1 citation
  3. 03

    Spin-polarized neutron matter, the maximum mass of neutron stars, and GW170817

    I. Tews🇺🇸 · A. Schwenk🇩🇪

    We investigate how a phase transition from neutron-star matter to spin-polarized neutron matter affects the equation of state and mass-radius relation of neutron stars. While general extension schemes for the equation of state allow for high pressures inside neutron stars, we find that a phase transition to spin-polarized neutron matter excludes extreme regimes. Hence, such a transition limits the maximum mass of neutron stars to lie below 2.6, depending on the microscopic nuclear forces used, while significantly larger masses could be reached without these constraints. These limits are in good agreement with recent constraints extracted from the neutron-star merger GW170817 and its electromagnetic counterpart. Assuming the description in terms of spin-polarized neutron matter to be valid in the center of neutron stars, we find that stars with a large spin-polarized domain in their core are ruled out by GW170817.

    nucl-thastro-ph.HEastro-ph.SRhep-phApJ(2020)·18 citations

Affiliations

first authorsco-authorsvia INSPIRE