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

Validity of relativistic hydrodynamics beyond local equilibrium

By constructing formal solutions to the Boltzmann moment equations, this paper demonstrates that relativistic hydrodynamics remains effective far from equilibrium not because systems are near equilibrium, but because non-perturbative modes allow it to smoothly interpolate between free-streaming and collective behavior, effectively explaining its success in modeling quark-gluon plasma.

Reghukrishnan Gangadharan2026-04-29
⚛️ nuclear theory

Effect of neutron-proton asymmetry on the 3^3H clustering in Boron isotopes

Using Antisymmetrized Molecular Dynamics, this study reveals that while α\alpha cluster formation in Boron isotopes is monotonically suppressed by increasing neutron number, 3^3H clustering exhibits a non-monotonic trend peaking at 12^{12}B due to a competition between neutron skin suppression and neutron-proton asymmetry enhancement, a phenomenon effectively quantified by the 3^3H/α\alpha spectroscopic factor ratio.

J. L. Jin, Q. Zhao, P. J. Li, M. Kimura, D. Beaumel, B. Zhou, J. L. Tian2026-04-29
⚛️ nuclear theory

A study of J/ψJ/\psi mass shift and bound states: Impact of DDD D and DDDD^* meson loops

This study employs an effective Lagrangian approach combined with QCD sum rules to demonstrate that increasing baryonic density induces a negative mass shift in the J/ψJ/\psi meson due to DDDD and DDDD^* meson loop contributions, suggesting the formation of meson-nucleus bound states and providing binding energy and decay width predictions for various nuclei to guide upcoming experimental investigations.

Manpreet Kaur, Arvind Kumar2026-04-29
⚛️ nuclear theory

Kilonovae and Long-duration Gamma-ray Bursts

This paper demonstrates that the kilonova-like emissions observed following long-duration gamma-ray bursts can be explained by nucleosynthesis in a collapsar scenario rather than a neutron star merger, challenging the assumption that red light evolution inherently requires heavy lanthanide elements.

Marko Ristić, Brandon L. Barker, Samuel Cupp, Axel Gross, Nicole Lloyd-Ronning, Oleg Korobkin, Jonah M. Miller, Matthew (…)2026-04-28