1634 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 computes the flavor-separated chiral-odd nucleon tensor form factors and their resulting monopole, dipole, and quadrupole moments using light-cone QCD sum rules, revealing new exact analytical relations between quark flavors and providing numerical predictions for the transverse spatial deformation of the nucleon's and quarks.
This paper derives a density functional for quark matter incorporating linear confinement interactions by applying the principle of color interaction saturation with an ansatz where the saturation parameter equals the Fermi momentum, yielding a Cornell potential at low densities and an interaction energy density proportional to at finite densities.
This study demonstrates that axion effects in hybrid stars primarily promote an earlier hadron-quark phase transition at lower densities and significantly enlarge the quark-matter cores, while exerting only a weak influence on the stars' maximum mass.
This paper derives a family of exact sum rules for spin-1 target tensor structure functions based on Siegert relations, establishing a superconvergence condition that connects theoretical predictions with experimental data and offers a direct strategy for measurement at facilities like JLab and the future EIC.
This paper presents a lattice QCD determination of the Bjorken sum rule by calculating the lowest moment of the nucleon's polarized structure function across a wide range of momentum transfers ( GeV) using the Feynman-Hellmann method, thereby enabling the study of higher-twist effects and providing an alternative hadronic evaluation of the strong coupling constant .
This study demonstrates that while gravitationally coupled dark matter in neutron stars has a limited direct impact on composition -modes, its presence indirectly mimics the effects of a stiffer symmetry energy, creating a significant degeneracy that complicates the use of oscillation frequencies to constrain dark matter fractions.
Motivated by recent HAL QCD lattice results, this paper employs heavy-meson chiral perturbation theory to demonstrate that isospin-independent two-pion exchange contributions at next-to-next-to-leading order are crucial for reproducing the semi-long-range behavior of the - potential and predicts similar tails for other - systems.
This paper proposes an effective hydrodynamic framework that models early-stage quark chemical equilibration in high-energy heavy-ion collisions as the relaxation of an effective bulk viscous pressure, successfully bridging non-perturbative initial dynamics with the lattice QCD equation of state and demonstrating its phenomenological impact on final-state observables across various collision systems at the LHC.
This paper introduces an Acceptance-Rejection Method to isolate and quantify the distinct impacts of radial and angular nucleon-nucleon correlations on initial-state geometric fluctuations in relativistic O+O collisions, revealing that while radial correlations set the bulk fluctuation scale, angular correlations are essential for reproducing eccentricity-energy covariance and that residual differences point to significant higher-order many-body effects.
This paper applies the Born-Oppenheimer effective field theory, a unified QCD-based framework derived from scale separation and symmetries, to describe the dynamics of ordinary and exotic hadrons containing two heavy quarks, specifically analyzing the , , and their bottom counterparts to elucidate the patterns of XYZ exotic states.