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.

⚛️ lattice

Tensor-polarized twist-3 parton distribution functions fLT(x)f_{LT}(x) for the spin-1 deuteron by using twist-2 relations

This paper calculates the tensor-polarized twist-3 parton distribution function fLT(x)f_{LT}(x) for the spin-1 deuteron by applying twist-2 relations to the known twist-2 function f1LL(x)f_{1LL}(x), demonstrating that fLT(x)f_{LT}(x) is comparable in magnitude to f1LL(x)f_{1LL}(x) and suggesting that current and future facilities like JLab and the EIC are well-suited to investigate these higher-twist effects.

S. Kumano, Kenshi Kuroki2026-03-17
⚛️ nuclear theory

Energy-momentum tensor form factor D(t) of proton and neutron

This paper constructs a neutron model analogous to a classical proton model to demonstrate that, despite electromagnetic-induced divergences at extremely small momentum transfers, the energy-momentum tensor form factor D(t)D(t) of protons and neutrons remains practically indistinguishable across experimentally accessible ranges, thereby accurately explaining the nucleon mass difference and reproducing lattice QCD data.

Andrea Mejia, Peter Schweitzer2026-03-17
⚛️ nuclear theory

New nonet scalar mesons and glueballs: the mass spectra and the production yields in relativistic heavy ion collisions

This paper proposes a new nonet scheme for scalar mesons (f0(980)f_0(980), a0(980)a_0(980), K0(1430)K_0^*(1430), and f0(1770)f_0(1770)) as PP-wave quark-antiquark states while identifying f0(1500)f_0(1500) as a glueball, supporting this classification through statistical and coalescence model calculations of their production yields in relativistic heavy ion collisions.

Shigehiro Yasui, Su Houng Lee, Pok Man Lo, Chihiro Sasaki2026-03-17
⚛️ nuclear theory

Electromagnetic structure of Bc and heavy quarkonia in the light-front quark model

This paper investigates the electromagnetic structure of heavy quarkonia and the BcB_c meson using a light-front quark model with variational wave functions, finding that the electromagnetic radii of 2S2S and 3S3S states are approximately 1.5 and 1.9 times larger than their 1S1S counterparts, respectively, in agreement with lattice QCD data and other model predictions.

Rayn Rasyid Harjapradipta, Muhammad Ridwan, Ahmad Jafar Arifi, Terry Mart2026-03-17