1422 papers
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.
This paper theoretically extends the Lifshitz formula to demonstrate that the anomalous magnetic moment of Dirac fermions significantly enhances the fermionic Casimir energy under magnetic fields, particularly through the gapless behavior of the lowest Landau level, while providing quantitative estimates for electrons, muons, and constituent quarks.
Using Monte Carlo simulations on SU(3) gauge theory lattices, this study investigates topologically stable strings formed at domain wall junctions in the deconfined phase, revealing that their free energy is dominated by the walls and that thermal fluctuations near the transition point cause these structures to decay into confined-deconfined interfaces.
This paper calculates the electromagnetic dipole transition cross sections for reactions up to 20 MeV using high-order chiral effective field theory interactions and operators, validating results against existing experiments while providing new predictions via an adapted Efros method for future many-body applications.
This paper reformulates a presentation on baryonic bound states within the non-local Nambu–Jona-Lasinio model, demonstrating how a relativistic Faddeev approach reduces the three-quark problem to an effective quark–diquark Bethe–Salpeter equation to calculate baryon masses and form factors via coupled integral equations.
This paper provides direct experimental evidence for quark confinement within the proton by demonstrating that the force between quarks is attractive and constant across a wide range of positions, derived from available data and Quantum Chromodynamics.
This paper employs the local operator-product-expansion method to independently derive twist-2 relations, specifically a Wandzura-Wilczek-like relation and a Burkhardt-Cottingham-like sum rule, for the twist-3 tensor-polarized distribution function of spin-1 hadrons, thereby providing a robust theoretical foundation for upcoming electron-deuteron deep inelastic scattering experiments at JLab.
By employing a Bayesian weighting framework that integrates multimessenger observations (including GW170817, NICER, and candidate compact objects) with hybrid equations of state, this study determines that the maximum neutron star mass is robustly constrained to approximately 2.2–2.3 solar masses while the corresponding radius depends more strongly on the underlying hadronic model, typically falling near 12 km.
This paper presents predictions for coherent and incoherent J/ψ production in oxygen and neon ultra-peripheral collisions using an impact-parameter-dependent color glass condensate framework, demonstrating that these measurements can constrain small-x nuclear structure and reveal systematic saturation effects that increase with nuclear mass and energy.
This paper introduces MuDirac 1.3.0, a sustainable and efficient open-source software tool that enables the negative muon community to accurately calculate nuclear properties, such as the charge radius, by modeling muonic X-ray transition energies under a two-parameter Fermi distribution.
This paper presents a coupled-channel formalism to describe the tunneling time of a quantum particle through composite compounds with multiple energy levels or complex structures, which can be modeled as quasi-one-dimensional multi-channel systems.