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.

⚛️ nuclear theory

Low-energy 3^{3}He(α,γα,γ)7^{7}Be reaction within the Skyrme potential framework

This paper employs a microscopic Skyrme Hartree-Fock-based folding potential model to simultaneously describe low-energy elastic scattering and calculate the astrophysical SS factor for the 3^{3}He(α,γ\alpha,\gamma)7^{7}Be reaction, yielding a recommended zero-energy value of S34(0)=0.610±0.024S_{34}(0) = 0.610 \pm 0.024 keV b that agrees well with experimental data.

Nguyen Le Anh, Nguyen Gia Huy, Dao Nhut Anh, Do Huy Tho, Hoang Thai An2026-03-31
🔭 astrophysics

Why Stellar Sequences Turn Over: Fixed Points, Instability, and Equation-of-State Universality

This paper reformulates stellar structure equations as a dynamical system to demonstrate that the maximum mass of stellar sequences corresponds to a fixed point in the relativistic regime, a framework that explains equation-of-state-insensitive relations and suggests that the pulsar J0740+6620 likely lies near this maximum only if a strong first-order phase transition occurs just above its central density.

Isaac Legred, Nicolas Yunes2026-03-31
⚛️ nuclear theory

Interaction of accelerator neutrinos with energies up to 55 MeV with 127{}^{127}I nuclei

This study investigates the interaction of accelerator neutrinos up to 55 MeV with 127{}^{127}I nuclei at the SNS, calculating cross sections that reveal the dominant contribution of the Gamow-Teller resonance GTR-1 (60–80%) alongside significant effects from higher resonances GTR-2 and AR-2, with theoretical results showing agreement with experimental data below the neutron separation threshold.

Yu. S. Lutostansky, A. N. Fazliakhmetov, V. N. Tikhonov, G. A. Koroteev, N. A. Belogortseva, N. V. Klochkova, A. Yu. Lut (…)2026-03-31
⚛️ phenomenology

Probe charmonium-nucleon interactions in high energy proton-proton collisions

This paper utilizes the EPOS4+CATS framework to dynamically generate non-Gaussian emission sources for charmonium-proton pairs in high-energy pp collisions, enabling the first femtoscopic extraction of charmonium-nucleon interactions while revealing that feed-down from excited states introduces significant uncertainties in prompt J/ψJ/\psi-proton correlation measurements.

Jiaxing Zhao, Taesoo Song, Joerg Aichelin, Elena Bratkovskaya, Pol Bernard Gossiaux, Klaus Werner2026-03-31
⚛️ nuclear experiments

Isolation of photon-nuclear interaction backgrounds in the search for the chiral magnetic effect in relativistic heavy-ion collisions

This study quantitatively assesses the contribution of coherent photon-nuclear interactions, driven by strong electromagnetic fields in relativistic heavy-ion collisions, as a distinct background source that mimics chiral magnetic effect signals to improve the precision of separating genuine CME signals from background noise.

Jing Gu, Jinhui Chen, Jie Zhao2026-03-31
⚛️ nuclear theory

Global polarization of Λ\Lambda hyperons and its sensitivity to equations of state in low-energy heavy-ion collisions

Using the SMASH transport model, this study demonstrates that the hadron resonance gas equation of state successfully reproduces experimental global Λ\Lambda hyperon polarization data at low collision energies, revealing a potential polarization peak around sNN=2.4\sqrt{s_{NN}} = 2.4 GeV and confirming that helicity polarization vanishes due to space-reversal symmetry.

Cong Yi, Shi Pu, Long-Gang Pang, Guang-You Qin, Xin-Nian Wang2026-03-31
⚛️ nuclear experiments

Magnetic moments of open bottom--charm molecular pentaquark octets

This paper presents a comprehensive theoretical calculation of the magnetic moments for open heavy-flavor (bcˉb\bar{c} and cbˉc\bar{b}) molecular pentaquark octets within a constituent quark model, revealing distinct electromagnetic signatures that differentiate between symmetric and antisymmetric light-diquark configurations and provide crucial benchmarks for identifying these states in future experiments.

Halil Mutuk, Xian-Wei Kang2026-03-31