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Mapping neutron star data to the equation of state using the deep neural network

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arxiv 1903.03400 v3 pith:BMLI6HTE submitted 2019-03-08 nucl-th astro-ph.HEhep-ph

classification nucl-thastro-ph.HEhep-ph
keywords neutronstarnetworkneuralstatedatadeepequation
verification ladder T0 review T1 audit T2 compute T3 formal
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The densest state of matter in the universe is uniquely realized inside central cores of the neutron star. While first-principles evaluation of the equation of state of such matter remains as one of the longstanding problems in nuclear theory, evaluation in light of neutron star phenomenology is feasible. Here we show results from a novel theoretical technique to utilize deep neural network with supervised learning. We input up-to-date observational data from neutron star X-ray radiations into the trained neural network and estimate a relation between the pressure and the mass density. Our results are consistent with extrapolation from the conventional nuclear models and the experimental bound on the tidal deformability inferred from gravitational wave observation.

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Cited by 4 Pith papers

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

  1. NNStar: An end-to-end AI agent for nuclear matter and neutron star physics

    nucl-th 2026-07 conditional novelty 6.0 of 10

    NNStar packages the RMF-to-neutron-star pipeline as a portable LLM-agent skill, validated on TM1/NL3/FSU-δ6.7 and demonstrated by an autonomous σ6-extended TM1 fit.

  2. Quark Phase Space Distributions in Nuclei

    nucl-th 2025-06 conditional novelty 6.0 of 10

    Using Wigner distributions, the authors find that the fraction of baryons with quark phase-space occupancy above the Pauli bound tends to a constant for heavy nuclei, supporting the plausibility of low-momentum suppression.

  3. Quarkyonic Quark-Meson Coupling Model for Nuclear and Neutron Matter

    nucl-th 2025-12 conditional novelty 5.0 of 10

    A quark-based nuclear matter model combining quarkyonic Pauli blocking with quark-meson coupling can be tuned to reproduce neutron-star and heavy-ion constraints.

  4. Topological Uncertainty for Anomaly Detection in the Neural-network EoS Inference with Neutron Star Data

    nucl-th 2025-08 conditional novelty 4.0 of 10

    Applying Topological Uncertainty to hidden-layer activations of a trained FNN detects failed neutron-star EoS inferences with over 90% success in the best-tested configuration.

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