Pith. sign in

REVIEW 6 cited by

Reconciling the HESS J1731-347 constraints with Parity doublet model

Not yet reviewed by Pith; the record is open.

Re-run · record.json Download PDF Read on arXiv ↗

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv 2404.04786 v2 pith:WDZIMDM7 submitted 2024-04-07 nucl-th

Bikai Gao , Yan Yan , Masayasu Harada This is my paper · ORCID
classification nucl-th
keywords compacthessj1731-347massmodelchiraldensitydoublet
verification ladder T0 review T1 audit T2 compute T3 formal
0 comments
abstract

The recent discovery of a central compact object (CCO) within the supernova remnant HESS J1731-347, characterized by a mass of approximately $0.77^{+0.20}_{-0.17} M_{\odot}$ and a radius of about $10.4^{+0.86}_{-0.78}$ km, has opened up a new window for the study of compact objects. This CCO is particularly intriguing because it is the lightest and smallest compact object ever observed, raising questions and challenging the existing theories. To account for this light compact star, a mean-field model within the framework of parity doublet structure is applied to describe the hadron matter. Inside the model, part of the nucleon mass is associated with the chiral symmetry breaking while the other part is from the chiral invariant mass $m_0$ which is insensitive to the temperature/density. The value of $m_0$ affects the nuclear equation of state for uniform nuclear matter at low density and exhibits strong correlations with the radii of neutron stars. We point out that HESS J1731-347 can be explained as the lightest neutron star for $m_0 \simeq 850$\,MeV.

Discussion (0). Continue with ORCID to comment.

Forward citations

Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Suppression of dynamical momentum-space shell by chiral symmetry

    nucl-th 2025-09 conditional novelty 6.0 of 10

    In a parity doublet model, self-consistent minimization keeps the quark fraction at zero up to about 8n0, showing quark onset and chiral restoration need not coincide.

  2. Ferromagnetic instabilities in quarkyonic matter

    nucl-th 2025-07 conditional novelty 6.0 of 10

    Quarkyonic neutron matter can turn ferromagnetic below about 5.5 n0, but only with a hand-chosen negative spin-spin interaction constant.

  3. Recurring region for neutron-star observables

    astro-ph.HE 2025-06 conditional novelty 6.0 of 10

    Minimizing the average sound speed across a percolation-smoothed deconfinement transition selects hybrid neutron star equations of state that cross a common, small recurring region in mass-radius and mass-tidal deform...

  4. Origin of nucleon mass in the light of PSR J0614-3329 with quark-hadron crossover

    nucl-th 2025-09 conditional novelty 5.0 of 10

    The parity doublet model combined with the new NICER radius measurement restricts the chiral invariant nucleon mass m0 to 800-860 MeV, implying it is at least 85% of the nucleon mass.

  5. Subsurface Vacancy Engineering Enables Atomically Clean and Oxidation-Resistant Copper Interfaces for Anode-Free Lithium Metal Batteries

    cond-mat.mtrl-sci 2025-08 reject novelty 5.0 of 10

    The abstract and the body of this preprint are entirely different papers, leaving the headline battery claim unsubstantiated.

  6. Constraints on the strength of first-order phase transition and its relation to nucleon mass

    nucl-th 2025-05 conditional novelty 4.0 of 10

    Using a parity doublet hadronic model, an NJL quark model, and integral causality constraints, the paper finds that the maximum allowed first-order phase-transition density jump in neutron-star matter decreases as the...

Pith tools