1396 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 study employs an extended thermal pairing plus phonon damping model to demonstrate that the low-energy upbend resonance originates from non-collective particle-hole excitations that emerge only at finite temperatures, thereby invalidating the Brink-Axel hypothesis in the low-energy region and establishing a new global relation between resonance strength and mass number.
This paper presents a precise theoretical calculation of the total and differential cross sections for radiative inverse beta decay using heavy baryon chiral perturbation theory, providing sub-permille accuracy essential for interpreting data from current and future reactor antineutrino experiments like JUNO.
This paper presents a complete, high-precision calculation of radiative corrections to the inverse beta decay reaction using heavy-baryon chiral perturbation theory, incorporating quantum electrodynamics, chromodynamics, and electroweak contributions to provide updated cross-section predictions essential for reactor neutrino flux normalization, oscillation parameter determination, and new physics searches.
This paper presents a compact, model-independent effective field theory formulation for neutrinoless double-beta decay that explicitly derives the dimensionally explicit half-life expression and a positivity bound for the coherent interference between two long-range scalar mechanisms, accounting for their complex coupling phases and specific nuclear matrix element ratios.
Motivated by the high mass of the black-widow pulsar PSR J0952−0607, this study constrains relativistic mean-field models containing hyperons by demonstrating that increasing the nonlinear -meson vector self-coupling parameter suppresses hyperon fractions and identifying the specific parameter space compatible with the pulsar's observed mass and rapid rotation.
This paper develops a formal eikonal expansion for classical gluon fields, demonstrating that while the method works straightforwardly in the weak field limit to relate potentials to currents, it fails in the strong field regime due to nonlinear mixing of orders, a problem resolved by integrating out high longitudinal momentum modes to yield a renormalized effective action.
Using a thermodynamic T-matrix approach with a separable potential, state-of-the-art heavy-quark selfenergies, and particle-hole excitations, this study successfully reproduces lattice QCD results for charmonium spatial correlators at finite momentum, revealing that zero modes are essential for explaining the increase in Euclidean correlators but not for the suppression of spatial correlators.
This study demonstrates that femtoscopic correlations arising from quantum statistics and final-state interactions can induce significant artificial spin-spin correlation signals in low-momentum and pairs, necessitating careful correction to avoid misinterpreting experimental data from high-energy collisions.
This paper incorporates the resonance into heavy-baryon chiral perturbation theory calculations to show that it restores power counting for the axial-vector charge, significantly reduces the QED radiative correction to the ratio, and increases pion-induced radiative corrections to inverse beta decay by a factor of 1.2–1.3.
This study employs microscopic time-dependent Hartree-Fock theory to analyze quasifission dynamics in 18 hot fusion reactions for synthesizing superheavy nuclei (Z=112-120), revealing that shell effects (specifically spherical 208Pb and octupole-deformed Z=88/N=136) govern fragment formation while heavier projectiles accelerate quasifission, thereby explaining the reduced fusion probabilities observed in attempts to create elements Z=119 and Z=120.