nucl-th papers | Gist.Science

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.

Bayesian Analysis of the Neutron Star Equation of State and Model Comparison: Insights from PSR J0437+4715, PSR J0614+3329, and Other Multi-Physics Data

This study employs a comprehensive Bayesian analysis integrating terrestrial nuclear physics data with astrophysical observations from PSR J0437+4715, PSR J0614+3329, and GW170817 to constrain the neutron star equation of state, ultimately favoring the Skyrme model and yielding precise determinations of symmetry energy parameters and the radius and tidal deformability of a 1.4 solar mass neutron star.

Sk Md Adil Imam, N. K. Patra2026-02-19⚛️ nucl-th

Mass-imbalance effect on the cluster formation in a one-dimensional Fermi gas with coexistent $s$ - and $p$ -wave interactions

This study investigates how mass imbalance influences the formation of stable two- and three-body clusters in a one-dimensional Fermi gas with coexisting $s$ - and $p$ -wave interactions, revealing that while vacuum three-body states are always more deeply bound than two-body ones, moderate interactions in the medium favor a Cooper trimer phase over pairing, accompanied by competition among different trimer configurations.

Yixin Guo2026-02-19⚛️ nucl-th

The anomalous magnetic moment of the muon: status and perspectives

This paper reviews the current status of the muon anomalous magnetic moment as a probe for physics beyond the Standard Model following the final FNAL results and the second Theory Initiative White Paper, while discussing experimental achievements, ongoing efforts to improve theoretical predictions, and future prospects for surpassing current precision limits.

David W. Hertzog, Martin Hoferichter2026-02-19⚛️ hep-lat

Producing $Λ(1405)$ and $Λ(1520)$ in $π^-p$ reaction to explore their inner structures

This study investigates the production mechanisms of $\Lambda(1405)$ and $\Lambda(1520)$ hyperon resonances in $\pi^- p$ scattering using an effective Lagrangian approach with Regge trajectories, revealing distinct dominant exchange contributions for each resonance and suggesting that $\Lambda(1405)$ possesses an exotic structure while $\Lambda(1520)$ is consistent with a conventional three-quark configuration.

Yuan Gao, Xiao-Yun Wang, Xiang Liu2026-02-19⚛️ nucl-th

Solving BDNK diffusion using physics-informed neural networks

This paper reformulates the relativistic BDNK diffusion equation in flux-conservative form and solves it in $(1+1)$ D using a second-order Kurganov-Tadmor scheme and a novel SA-PINN-ACTO framework, demonstrating that the neural network approach accurately reproduces finite volume solutions for smooth profiles while exhibiting expected errors near discontinuities.

Vicente Chomalí-Castro, Nick Clarisse, Nicki Mullins, Jorge Noronha2026-02-19⚛️ nucl-th

Rapidity dependence of mean transverse momentum fluctuation and decorrelation in baryon-dense medium

This study demonstrates that event-by-event fluctuations and rapidity decorrelation of mean transverse momentum in baryon-dense media are driven by energy and net-baryon density fluctuations rather than baryon diffusion, establishing the observable as a robust probe of the equation of state while revealing distinct flow dynamics between protons and antiprotons.

Tribhuban Parida2026-02-19⚛️ nucl-th

All-path-length and sub-eikonal corrections to momentum broadening in the opacity expansion approach

This paper extends the GLV formalism for momentum broadening in the Quark-Gluon Plasma by deriving first-order opacity expressions that incorporate all-path-length and sub-eikonal corrections, revealing that while the former suppresses low-momentum broadening and the latter enhances high-momentum broadening, their combined effect results in the sub-eikonal correction mitigating the impact of the all-path-length correction.

Dario van den Berg, Isobel Kolbe2026-02-19⚛️ nucl-th

The Crusts of Neutron Stars Revisited: Approximations within a Polytropic Equation of State Approach

This paper validates simple thin-crust approximations for neutron star structural calculations using various equations of state, while also demonstrating how modifications to gravity and dark matter admixture introduce significant degeneracies in the mass-radius relation that are difficult to resolve.

F. Köpp, J. E. Horvath, C. A. Z. Vasconcellos2026-02-19⚛️ nucl-th

The spatial Wilson loops, string breaking, and AdS/QCD

This paper utilizes gauge/string duality to investigate string breaking in spatial Wilson loops, specifically analyzing the influence of light flavors on the pseudopotential and estimating the spatial string breaking distance for $SU(3)$ gauge theory across temperatures from 0 to $3\,T_c$ .

Oleg Andreev2026-02-19⚛️ hep-lat

Covariant form factors for spin-1 particles

This study employs both instant-form and light-front quantum field theories to demonstrate that incorporating nonvalence terms in the minus component of the electromagnetic current is essential for restoring manifest covariance and ensuring consistency with instant-form results for spin-1 particles.

J. P. B. C. de Melo2026-02-18⚛️ nucl-th

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