Nuclear theory sits at the fascinating intersection of particle physics and the forces that hold our universe together. This field explores how protons and neutrons bind inside atomic nuclei, seeking to understand the fundamental interactions that govern matter at its most dense and energetic levels. While the mathematics involved can be incredibly complex, the core questions are deeply human: how does the universe function at its smallest scales, and what happens when we push matter to its limits?

At Gist.Science, we make these cutting-edge discoveries accessible by processing every new preprint published in this category on arXiv. Our team transforms dense academic manuscripts into clear, plain-language summaries alongside detailed technical overviews, ensuring that both experts and curious readers can grasp the latest breakthroughs without getting lost in the jargon. Below are the latest papers in nuclear theory, distilled and ready for you to explore.

Finite-Size Scaling of Net-Proton Cumulants in Heavy-Ion Collisions: Remarks on the Interpretation of a Recent Analysis

This paper critically examines a recent analysis claiming evidence for a QCD critical end point via finite-size scaling of net-proton cumulants, highlighting methodological issues regarding acceptance windows, multiplicity scaling, and thermodynamic fields that must be addressed for a consistent interpretation.

Roy A. Lacey (Department of Chemistry, Stony Brook University, Stony Brook, NY, USA)2026-03-12⚛️ nucl-th

Quantifying uncertainty in physics-based predictions of rare-isotope production cross sections via Bayesian-inspired model averaging across nuclear mass tables

This paper introduces a Bayesian-inspired model-averaging framework that combines abrasion-ablation calculations from multiple nuclear mass tables to generate statistically weighted predictions and uncertainty estimates for rare-isotope production cross sections, thereby improving accuracy for both interpolation and limited extrapolation in proton-rich fragmentation regimes.

O. B. Tarasov2026-03-12⚛️ nucl-ex

Novae breves from magnetar giant flares: Potential probes of neutron star crusts

This paper investigates how the neutron star equation of state and magnetar mass influence the ejecta properties and light curves of "novae breves"—short-lived optical transients from magnetar giant flares—demonstrating that these features are detectable with current and future facilities, thereby offering a promising method to probe neutron star crusts.

Jiahang Zhong, Qiu-Hong Chen, Yacheng Kang, Hong-Bo Li, Jinghao Zhang, Meng-Hua Chen, Lijing Shao2026-03-12⚛️ nucl-th

Direct observation of three-neutron emission from 7^7He^* and the search for the trineutron

This paper reports the first direct observation of three-neutron emission from 7^7He^*, identifying a resonance-like structure consistent with sequential decay via 6^6He and finding no evidence for a trineutron resonance or significant three-neutron correlations beyond standard two-body interactions.

S. W. Huang, C. Lenain, Z. H. Yang, F. M. Marqués, J. Gibelin, J. G. Li, A. Matta, N. A. Orr, N. L. Achouri, D. S. Ahn, A. Anne, T. Aumann, H. Baba, D. Beaumel, M. Böhmer, K. Boretzky, M. Caamañ (…)2026-03-12⚛️ nucl-ex

Fragmentation of Nuclear Remnants in Electron-Nucleus Collisions at High Energy as a Nonextensive Process

This paper proposes that the fragmentation of nuclear remnants in high-energy electron-nucleus collisions is a nonextensive process, utilizing partitioning methods and Tsallis statistics to predict multiplicity distributions for excited nuclei like 9^9Be, 12^{12}C, and 16^{16}O while highlighting potential deviations caused by α\alpha-cluster structures.

Ting-Ting Duan, Sahanaa Büriechin, Hai-Ling Lao, Fu-Hu Liu, Khusniddin K. Olimov2026-03-11⚛️ nucl-ex

Thermal Radiation from an Analytic Hydrodynamic Model with Hadronic and QGP Sources in Heavy-Ion Collisions

This paper presents a fully analytic hydrodynamic model incorporating a lattice-QCD-consistent equation of state to describe thermal photon production across the quark-hadron transition, demonstrating good agreement with PHENIX experimental data for Au+Au collisions at sNN=200\sqrt{s_{NN}} = 200 GeV and enabling the investigation of initial temperature centrality dependence.

Gábor László Kasza2026-03-11⚛️ nucl-th

Spectrum of Light Hexaquark States in Triquark-antitriquark Configuration

Using QCD sum rules, this paper investigates triquark-antitriquark hexaquark configurations to interpret the BESIII-observed X(2075)X(2075) and X(2085)X(2085) states, finding that two predicted JP=1J^P=1^- candidates match the experimental masses while offering new predictions for 0+0^+ and 00^- states and analyzing their decay modes.

Xuan-Heng Zhang, Sheng-Qi Zhang, Cong-Feng Qiao2026-03-11⚛️ hep-ph

Probing Strange Dark Matter through ff-mode Oscillations of Neutron Stars with Hyperons and Quark Matter

This study demonstrates that the presence of sexaquark dark matter, hyperons, and quark matter in neutron stars systematically alters the quasi-universal relations of their fundamental (ff-mode) oscillations, suggesting that precise future gravitational-wave measurements of these modes could serve as clear signatures for detecting exotic matter and dark matter in stellar interiors.

Mahboubeh Shahrbaf, Prashant Thakur, Davood Rafiei Karkevandi2026-03-11⚛️ nucl-th