1159 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 presents a boson exchange approach based on the Thomas-Efimov theorem to model the 3 reaction in helium-burning stars, proposing an E0 decay scheme for the compound state that successfully describes low-temperature reaction rates while avoiding long-range Coulomb complications.
Using four-body AGS equations to analyze the low-energy reaction, this study demonstrates that a quasi-bound state signal is likely observable in the mass spectrum across various interaction models, thereby supporting the feasibility of detecting this cluster in kaon-induced reactions on helium-3.
This paper analyzes systematic errors arising from higher-twist contamination and kinematic effects in extracting the leading-twist structure function from inclusive DIS on a tensor-polarized deuteron, comparing two target polarization directions to determine that while both options yield comparable errors at Jefferson Lab 12 GeV kinematics, the momentum transfer direction is preferred at higher values.
This paper provides a first-principles explanation for the origin of nuclear magic numbers and pseudospin symmetry by demonstrating how a transition from spin to pseudospin symmetry naturally emerges as the momentum resolution of realistic nuclear forces decreases.
This paper introduces a Bayesian framework to systematically quantify many-body truncation uncertainties in *ab initio* calculations of finite nuclei using many-body perturbation theory and chiral effective field theory interactions, thereby advancing the comprehensive assessment of theoretical errors in nuclear structure research.
This paper introduces a method to incorporate -process heating into hydrodynamic simulations of neutron star merger disk outflows, revealing that this feedback mechanism increases unbound ejecta mass by approximately 10% and significantly enhances the radial velocity of low-electron-fraction material.
This paper demonstrates that two complementary models of nucleon structure yield consistent predictions for light-front transverse charge and magnetisation densities, revealing distinct flavour-dependent quark radii, the dominant magnetic activity of valence quarks due to orbital angular momentum, and a characteristic transverse charge displacement in polarised nucleons.
Using ab initio nuclear lattice effective field theory with Bayesian uncertainty quantification, this study reveals that the ground states of H and H are characterized by valence neutrons forming compact dineutron pairs that predominantly organize into symmetric dineutron-dineutron configurations, thereby providing crucial structural insights into multi-neutron correlations and the nature of four-neutron clusters.
This paper presents a global QCD analysis incorporating recent MARATHON experiment data to simultaneously determine parton distribution functions and nucleon off-shell corrections, revealing that both isoscalar and isovector nuclear effects are required to describe light nuclei () and that their EMC ratios differ significantly from naive extrapolations of heavy nuclei.
This paper demonstrates that the Electron-Ion Collider offers a unique platform for nuclear spectroscopy by correlating rare-isotope production and de-excitation radiation with well-defined initial conditions through the study of event-by-event fluctuations in electron-nucleus collisions using the BeAGLE model.