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

A Barnett-Like Effect in Relativistic Heavy-Ion Collisions

Through transport simulations and experimental validation, this paper demonstrates that relativistic heavy-ion collisions exhibit a Barnett-like effect where the global spin polarization of Λ\Lambda hyperons scales linearly with the source tilt angle, revealing a geometry-modulated spin-vorticity coupling at the femtometre scale.

Dai-Neng Liu, Kai-Jia Sun, Jan Steinheimer, Jin-Hui Chen, Yu-Gang Ma, Marcus Bleicher2026-10-27
⚛️ nuclear experiments

Muon Tridents at FASER and NA64μ\mu: Motivation, Predictions, and Prospects for Precision Measurements

This paper presents improved theoretical predictions and prospects for the first precision measurement of muon trident scattering at TeV energies using data from the FASER and NA64μ\mu experiments, demonstrating their potential to probe the process's energy dependence with percent-level accuracy.

Reinaldo Francener, Victor P. Goncalves, Felix Kling, Gabriel Rabelo-Soares2026-10-27
⚛️ high-energy experiments

Dark-Matter-Induced Nuclear Deexcitation at the Short Baseline Near Detector with Ab Initio Nuclear Theory

This paper demonstrates that the Short-Baseline Near Detector (SBND) can probe previously unexplored light dark matter parameter space by detecting MeV-scale photon "blips" from nuclear deexcitation, utilizing state-of-the-art ab initio nuclear calculations to predict signals in argon nuclei.

Bhaskar Dutta, Debopam Goswami, Baishan Hu, Wei-Chih Huang, Vishvas Pandey2026-10-27
⚛️ nuclear experiments

The renormalization of the shell-model neutrinoless double-beta decay operator starting from effective field theory at next-to-next-to-leading order

This paper extends a previous study by constructing effective shell-model decay operators for neutrinoless double-beta decay in 48^{48}Ca, 76^{76}Ge, and 82^{82}Se up to next-to-next-to-leading order, including for the first time three-body current contributions at next-to-next-to-next-to-leading order, to evaluate theoretical uncertainties arising from both model space limitations and chiral expansion truncation.

S. L. Lyu, U. Carusone, G. De Gregorio, N. Itaco, L. Coraggio2026-10-26
⚛️ nuclear theory

Parton distribution functions of the proton in a hot isospin-asymmetric nuclear medium and finite nuclei

This paper computes the modifications to the unpolarized, helicity, and transversity parton distribution functions of a proton within hot, isospin-asymmetric nuclear matter and finite nuclei using a diquark spectator model coupled with the chiral SU(3) quark mean field approach, revealing that spin-dependent distributions are altered more strongly than unpolarized ones and that axial charge variations in finite nuclei correlate with central density rather than mass number.

Navpreet Kaur, Manpreet Kaur, Dhananjay Singh, Arvind Kumar, Harleen Dahiya, Suneel Dutt2026-10-23