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.

Quantum simulating multi-particle processes in high energy nuclear physics: dijet production and color (de)coherence

This paper introduces a quantum simulation framework that maps partonic cross-sections to quantum circuits to compute multi-particle processes in QCD media, successfully benchmarking dipole formation and antenna radiation patterns against analytic estimates to establish a systematic foundation for studying complex hadronic dynamics.

João Barata, Meijian Li, Wenyang Qian, Carlos A. Salgado, João M. Silva2026-04-14⚛️ nucl-th

All-charm tetraquarks at hadron colliders: A high-precision fragmentation perspective

This paper presents the TQ4Q2.0 fragmentation functions, a high-precision, uncertainty-quantified framework for modeling the production of all-heavy SS-wave tetraquarks in hadronic collisions, which extends previous models by incorporating nonconstituent heavy-quark contributions and advanced evolution schemes to establish a definitive baseline for future collider phenomenology.

Francesco Giovanni Celiberto2026-04-14⚛️ nucl-ex

Microscopic study of nuclei synthesis in pycnonuclear reaction 12^{12}C + 12^{12}C in neutron stars

This paper employs a microscopic cluster model with folding potentials and the Multiple Internal Reflections method to demonstrate that the synthesis of 24^{24}Mg via 12^{12}C + 12^{12}C pycnonuclear reactions in neutron stars is most probable through the formation of a new excited compound nucleus in quasibound states, offering a more precise description than traditional Woods-Saxon potentials.

S. P. Maydanyuk, Ju-Jun Xie, V. S. Vasilevsky, K. A. Shaulskyi2026-04-13⚛️ nucl-ex

Improved Standard-Model predictions for η()+\eta^{(\prime)}\to \ell^+ \ell^-

This paper presents improved Standard Model predictions for the rare dilepton decays η()+\eta^{(\prime)}\to \ell^+\ell^- by leveraging recent advances in transition form factor calculations and a robust dispersive evaluation of subleading contributions, yielding precise branching fractions that reveal a mild tension with experimental data for ημ+μ\eta\to\mu^+\mu^- and provide new constraints on physics beyond the Standard Model.

Noah Messerli, Martin Hoferichter, Bai-Long Hoid, Simon Holz, Bastian Kubis2026-04-13⚛️ hep-lat

Crossover Equation of State Constrained by Astronomical Observations and pQCD

This paper investigates a hadron-quark crossover equation of state for neutron stars by constraining Nambu--Jona-Lasinio model parameters with perturbative QCD and astronomical observations, finding that such crossover models significantly enhance maximum neutron star masses and offer distinct radial oscillation signatures that could serve as probes for quark matter interiors.

Xuesong Geng, Kaixuan Huang, Hong Shen, Lei Li, Jinniu Hu2026-04-13⚛️ nucl-th