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

Nuclear scattering phase shifts with factorized geometric-time RODEO on a quantum processor

This paper demonstrates that a compressed, six-cycle factorized geometric-time RODEO circuit (FG-R6) executed on an IBM quantum processor significantly reduces gate counts and energy uncertainty compared to a standard ten-cycle dynamic approach, thereby enabling more accurate reconstruction of nuclear neutron-proton scattering phase shifts from trapped spectra.

Myeong-Hwan Mun, Jubin Park, Myung-Ki Cheoun, Eunja Ha2026-09-29
⚛️ nuclear theory

Medium effects on neutron star modified and direct Urca cooling rates

This paper analyzes isolated neutron star cooling data to conclude that fast direct Urca processes, moderated by proton superfluidity, must be active in most stars with onset thresholds below canonical masses, rendering medium modifications to modified Urca rates negligible while highlighting the dominant role of neutron-neutron Bremsstrahlung.

B. X. Zhou, Jin-Biao Wei, Z. H. Li, G. F. Burgio, H. -J. Schulze2026-09-29
⚛️ nuclear theory

Set Transformer inference of the neutron star equation of state from stellar observations

This paper introduces a permutation-invariant Set Transformer that learns to map unordered sets of neutron star observations directly to the dense matter equation of state, providing physically interpretable, well-calibrated predictions with density-dependent uncertainties without assuming a fixed star-to-density correspondence.

Márcio Ferreira, Valéria Carvalho, Michał Bejger, Constança Providência2026-09-28
⚛️ nuclear theory

Skyrme-Hartree-Fock-Bogoliubov mass models on a 3D mesh: V. The N2LO extension of the Skyrme EDF

This paper introduces BSkG5, the first large-scale nuclear structure model based on a next-to-next-to-leading order (N2LO) Skyrme energy density functional, which achieves high accuracy in predicting nuclear masses, charge radii, and fission barriers while maintaining a neutron matter equation of state consistent with neutron star observations, all with fewer parameters than previous models.

G. Grams, W. Ryssens, A. Sánchez-Fernández, N. N. Shchechilin, L. González-Miret Zaragoza, P. Demol, N. Chamel, S. Gorie (…)2026-09-25
⚛️ nuclear theory

Chiral anomaly and nucleon spin decomposition in the chiral quark soliton model

This study extends the chiral quark soliton model to include a flavor-singlet pseudoscalar field generated by the chiral anomaly, revealing that while the anomaly-induced field enhances quark helicity and its associated mass suppresses this effect in favor of orbital angular momentum, these modifications result in only modest redistributions that do not qualitatively alter the conventional nucleon spin decomposition.

Josuke Minamiguchi, Tomoya Uji2026-09-25