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.

Effects of hadronic reinteraction on jet fragmentation from small to large systems

Using the X-SCAPE event generator coupled with the SMASH afterburner, this study demonstrates that hadronic rescattering significantly modifies jet fragmentation observables even in small systems like e++ee^++e^- collisions, highlighting the critical role of the hadronic phase in jet quenching across different collision environments.

Hendrik Roch, Aaron Angerami, Ritu Arora, Steffen Bass, Yi Chen, Ritoban Datta, Lipei Du, Raymond Ehlers, Hannah Elfner, Rainer J. Fries, Charles Gale, Yayun He, Barbara Jacak, Peter Jacobs, Sangyong (…)2026-02-02⚛️ hep-ph

Global Bayesian Analysis of J/ψ\mathrm{J}/ψ Photoproduction on Proton and Lead Targets

This paper presents a global Bayesian analysis of diffractive J/ψ\mathrm{J}/\psi photoproduction on proton and lead targets using a color glass condensate framework, revealing that while simultaneous description of HERA and LHC data is challenging, introducing an overall KK-factor significantly improves the model's ability to fit both datasets.

Heikki Mäntysaari, Hendrik Roch, Farid Salazar, Björn Schenke, Chun Shen, Wenbin Zhao2026-02-02⚛️ nucl-th

The Three-Body Limit Cycle: Universal Form for General Regulators

This paper establishes that the three-body renormalization relation in Short-Range Effective Field Theory universally follows a real Möbius transformation characterized by three regulator-dependent parameters for general separable regulators, thereby extending the understanding of the Efimov effect's RG limit cycle beyond sharp cutoffs.

Langxuan Chen, Feng Wu, Xincheng Lin, Sebastian König, Ubirajara van Kolck, Pengfei Zhang2026-02-02🔬 physics.atom-ph

Medium modifications of 1P1P-wave charmonia χcJ(1P)χ_{cJ}(1P) in cold nuclear matter

Using the quark-meson coupling model, this study predicts significant mass reductions of approximately 60 MeV for 1P1P-wave charmonia (χcJ(1P)\chi_{cJ}(1P)) in cold symmetric nuclear matter at normal density, primarily driven by vector-vector loops, while finding no level crossing with the DDˉD\bar{D} threshold up to three times normal nuclear density.

Ze-Hua Zhang, Xiang Liu2026-02-02⚛️ nucl-th

Rapidly rotating hot nuclear and hypernuclear compact stars: integral parameters and universal relations

This study investigates how variations in symmetry energy within nucleonic and hyperonic equations of state affect the global properties and universal relations of hot, isentropic compact stars in both static and maximally rotating configurations, demonstrating that these universal relations remain robust across diverse conditions relevant to binary neutron star mergers and proto-neutron stars.

Stefanos Tsiopelas, Armen Sedrakian, Micaela Oertel2026-02-02⚛️ gr-qc

Mass spectra and Mott transitions of neutral mesons at finite temperature and magnetic field in frame of three-flavor Polyakov-extended Nambu-Jona-Lasino model

This study investigates the mass spectra and Mott transitions of neutral mesons (K0,Kˉ0,π0,η,ηK_0, \bar{K}_0, \pi_0, \eta, \eta') within a three-flavor Polyakov-extended Nambu-Jona-Lasino model at finite temperature and magnetic field, revealing how gluon effects and inverse magnetic catalysis influence chiral symmetry restoration, flavor mixing, and the temperature-dependent behavior of meson masses.

Luyang Li, Min Zhou, Zhiyang Liu, Chonglong Xie, Guoyun Shao, Shijun Mao2026-02-02⚛️ nucl-th

f2(1270)π+πf_2(1270)\toπ+π as a probe of spin and vorticity in heavy-ion collisions

This paper investigates the f2(1270)π+πf_2(1270)\to\pi+\pi decay as a probe for vorticity and spin alignment in heavy-ion collisions by deriving the general angular distribution of pions via interaction Lagrangian and helicity formalism, and subsequently calculating spin density matrix elements under local thermal equilibrium and blast wave models across different centrality classes.

In Woo Park, Beomkyu Kim, Giorgio Torrieri, Kayman J. Gonçalves, Sanghoon Lim, Su Houng Lee2026-02-02⚛️ nucl-ex