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Nucleon Effective Masses in Neutron-Rich Matter

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arxiv 1801.01213 v1 pith:5XIBQN5A submitted 2018-01-04 nucl-th astro-ph.HEhep-exhep-phnucl-ex

classification nucl-thastro-ph.HEhep-exhep-phnucl-ex
keywords massesnucleoneffectivematterneutron-richisovectornuclearnuclei
verification ladder T0 review T1 audit T2 compute T3 formal
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Various kinds of isovector nucleon effective masses are used in the literature to characterize the momentum/energy dependence of the nucleon symmetry potential or self-energy due to the space/time non-locality of the underlying isovector strong interaction in neutron-rich nucleonic matter. The multifaceted studies on nucleon isovector effective masses are multi-disciplinary in nature. Besides structures, masses and low-lying excited states of nuclei as well as nuclear reactions, studies of the isospin dependence of short-range correlations in nuclei from scatterings of high-energy electrons and protons on heavy nuclei also help understand nucleon effective masses especially the so-called E-mass in neutron-rich matter. A thorough understanding of all kinds of nucleon effective masses has multiple impacts on many interesting issues in both nuclear physics and astrophysics. We review some of the significant progresses made in recent years by the nuclear physics community in resolving some of the hotly debated and longstanding issues regarding nucleon effective masses especially in dense neutron-rich matter.

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Cited by 4 Pith papers

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  1. From Multimessenger Inference to Simulations: A Ranked Ensemble of Finite-Temperature Equations of State

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    The paper constructs a 12-member ensemble of finite-temperature neutron star equations of state that spans the posterior from multimessenger and nuclear-physics constraints and releases simulation-ready tables.

  2. On the Nucleon Effective Mass in Neutron Stars Cooling

    hep-th 2026-07 conditional novelty 6.0 of 10

    Using the Landau instead of the Dirac effective nucleon mass in neutron-star cooling calculations cools massive stars faster, changing predicted surface temperatures by ~0.03–0.06 dex.

  3. Bayesian analysis of properties of nuclear matter with the FOPI experimental data

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    Bayesian fits to FOPI Au+Au flow and stopping data yield m*/m0 around 0.78-0.88 and F around 0.75-0.88, while K0 remains unconstrained.

  4. Experimental Study of Bremsstrahlung Gamma Ray Emission and Short-Range Correlations in $^{124}$Sn+$^{124}$Sn Collisions at 25 MeV/u

    nucl-ex 2025-08 unverdicted novelty 5.0 of 10

    Precision measurement of bremsstrahlung gamma rays in 124Sn+124Sn collisions at 25 MeV/u yields a high-momentum tail fraction of (20 ± 3)% in 124Sn when compared to IBUU simulations.

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