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

RG-Consistent (P)NJL Model: Impact of Thermal Cutoff Modifications on Thermodynamics and Net-Baryon Number Fluctuations

This paper investigates how implementing a temperature-dependent thermal cutoff to ensure renormalization group consistency in RGNJL and RGPNJL models resolves causality violations, improves convergence to the Stefan-Boltzmann limit, and enhances the description of net-baryon number fluctuations compared to lattice QCD data, while revealing complex sensitivities in the PNJL framework at high baryon densities.

Jie Tang, Fan Lin, Xinyang Wang2026-05-12
⚛️ nuclear theory

Ξ\Xi-deuteron low-energy ss-wave phase shifts and momentum correlation functions in Faddeev formulation

This paper investigates low-energy Ξ\Xi-deuteron scattering using the Faddeev formulation with three different Ξ\Xi-nucleon interaction models, presenting ss-wave phase shifts and momentum correlation functions to demonstrate how deuteron breakup effects and prospective experimental data can refine the understanding of ΞN\Xi N interactions.

M. Kohno, H. Kamada2026-05-11
⚛️ nuclear theory

Quasiparticle properties of a single Λ\Lambda impurity in symmetric nuclear matter with a regulated NΛN\Lambda interaction

Using a regulated low-momentum contact potential within the Green's function formalism, this study calculates the quasiparticle properties of a single Λ\Lambda hyperon in symmetric nuclear matter, finding a binding energy of $-29.55$ MeV at saturation density that agrees with empirical data and demonstrating that dynamical correlation contributions from repeated in-medium scattering are essential for reproducing the observed binding scale.

Bahruz Suleymanli, Kutsal Bozkurt2026-05-11
⚛️ nuclear theory

Kinetic approach of light-nuclei production in intermediate-energy heavy-ion collisions

This work presents a kinetic approach that dynamically incorporates transformations between nucleons and light nuclei as well as the Mott effect to successfully reproduce the experimental yields of light nuclei in medium-energy heavy-ion collisions, and attributes the enhancement of alpha-particle production at low energies to their high binding energy, which resists dissolution in the nuclear medium.

Rui Wang, Yu-Gang Ma, Lie-Wen Chen, Che Ming Ko, Kai-Jia Sun, Zhen Zhang2026-05-08
⚛️ phenomenology

Massive hybrid stars within the extended three-flavor quark-meson diquark model

This article demonstrates that the extended three-flavor quark-meson-diquark model, particularly through the inclusion of vector and axial-vector mesons, successfully describes massive hybrid stars with masses exceeding 2M⊙2M_{\odot} and radii consistent with astrophysical observations by generating a sufficiently stiff equation of state and a double-peak structure in the speed of sound, which is driven by the decreasing mass of the strange quark at high densities.

Jens O. Andersen, Mathias P. Nødtvedt2026-05-08