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Nuclear Theory·nucl-th

Friday·May 2, 2025

7 papers—4 primary·3 cross-listed

All7Primary4Cross-lists3
  1. 05

    Quarkonia Theory: From Open Quantum System to Classical Transport

    Xiaojun Yao🇺🇸

    This is a theoretical overview of quarkonium production in relativistic heavy ion collisions given for the Hard Probes 2024 conference in Nagasaki. The talk focuses on the application of the open quantum system framework and the formulation of the chromoelectric correlator that uniquely encodes properties of the quark-gluon plasma relevant for quarkonium dynamics and thus can be extracted from theory-experiment comparison.

    ↳ hep-phnucl-thquant-phEPJ Web Conf.(2025)·2 citations
  2. 06

    Enhanced Nuclear Binding Near the Proton Dripline Opens Possible Bypass of the rp-process Waiting Point

    Z. Meisel · W.-J. Ong · J.S. Randhawa

    We performed astrophysics model calculations with updated nuclear data to identify a possible bypass of the waiting-point, a defining feature of the rapid-proton capture (rp-) process that powers type-I x-ray bursts on accreting neutron stars. We find that the rp-process flow through the bypass could be up to 36\% for astrophysically relevant conditions. Our results call for new studies of , including the nuclear mass, -delayed proton emission branching, and nuclear structure as it pertains to the reaction rate at x-ray burst temperatures.

    ↳ astro-ph.HEnucl-thApJ(2025)·1 citation
  3. 07

    Bayesian Inference of Hybrid Star Properties from Future High-Precision Measurements of Their Radii

    Bao-An Li🇺🇸 · Xavier Grundler🇺🇸 · Wen-Jie Xie🇺🇸 · Nai-Bo Zhang🇺🇸

    Future high-precision X-ray and gravitational-wave observations of neutron stars (NSs) are expected to constrain NS radii with uncertainties as small as ~km. Such unprecedented precision offers a unique opportunity to extract new information about the nature and equation of state (EOS) of supradense matter in NS cores. Using mock radius data with uncertainties ranging from to ~km, together with a flexible meta-model NS EOS that allows for a first-order hadron-quark phase transition, we perform a Bayesian statistical analysis to assess the impact of radius measurements on EOS constraints. We find that high-precision radius measurements, particularly for massive NSs, significantly tighten constraints on the hadron-quark transition density , the quark matter mass fraction in NS cores, and several parameters characterizing the EOS of supranuclear hadronic matter, although the degree of improvement depends on the assumed prior range of . In contrast, even with the highest precision considered, NS radii -- including those of massive stars -- remain largely insensitive to the stiffness of quark matter, independent of the measurement accuracy or the prior range adopted for .

    ↳ astro-ph.HEastro-ph.GAhep-phnucl-ex+1ApJ(2026)·16 citations

Affiliations

first authorsco-authorsvia INSPIRE