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.

Anisotropic time evolution of sound modes in Bjorken expanding holographic plasma

This paper numerically investigates the time evolution of sound modes in a Bjorken-expanding N=4\mathcal{N}=4 Super-Yang-Mills plasma, revealing how longitudinal expansion-induced anisotropy splits the speed of sound into two distinct values and constructing an anisotropic hydrodynamic framework to interpret these findings for heavy-ion collision data.

Casey Cartwright, Ruchi Chudasama, Sergei Gleyzer, Durdana Ilyas, Matthias Kaminski, Marco Knipfer, Jun Zhang2026-02-04⚛️ nucl-ex

Neutron skin thickness and its volume and surface contributions

Using the deformed relativistic Hartree-Bogoliubov theory in continuum, this study systematically analyzes the neutron skin thickness in berkelium isotopes, revealing that while shell closures induce anti-kinks and deformation enhances surface diffuseness, the volume term remains the dominant contributor to the skin thickness, which exhibits significant anisotropy in prolate nuclei.

Peng Wang, Zi-Dan Huang, Shuang-Quan Zhang, Ting-Ting Sun2026-02-04⚛️ nucl-th

Bayesian analysis of (3+1)D relativistic nuclear dynamics with the RHIC beam energy scan data

This study employs Bayesian inference with high-accuracy model emulators to analyze RHIC Beam Energy Scan data, thereby providing robust constraints on Quark-Gluon Plasma transport properties, elucidating the sensitivity of experimental observables to model parameters, and generating predictions for pTp_{\rm T}-differential observables with estimated systematic uncertainties.

Syed Afrid Jahan, Hendrik Roch, Chun Shen2026-02-03⚛️ hep-ph

Impact of the in-medium cross section on cluster spectra in 40,48Ca+58,64Ni{}^{40,48}\mathrm{Ca}+{}^{58,64}\mathrm{Ni} collisions at $56$ and $140$ MeV/nucleon\mathbf{\mathrm{MeV}}/\mathrm{\mathbf{nucleon}}

Using the Antisymmetrized Molecular Dynamics model to analyze transverse momentum spectra of light clusters in central 40,48Ca+58,64Ni{}^{40,48}\mathrm{Ca}+{}^{58,64}\mathrm{Ni} collisions at 56 and 140 MeV/nucleon, this study demonstrates that in-medium nucleon-nucleon scattering cross-sections experience a stronger reduction at the lower incident energy compared to the higher one.

C. K. Tam, Z. Chajecki, R. S. Wang, F. C. E. Teh, N. Ikeno, W. G. Lynch, A. Ono, M. B. Tsang, A. Anthony, S. Barlini, J. Barney, K. W. Brown, A. Camaiani, A. Chbihi, D. Dell'Aquila, J. Estee, A. Galin (…)2026-02-03⚛️ nucl-ex