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 paper proposes a "blending" algorithm that combines spatial low-frequency mode projections with stochastic high-frequency estimates to efficiently compute all-to-all fermion propagators, enabling high-precision first-principles predictions of nucleon axial charges and pion form factors in quantum chromodynamics.
This study demonstrates that supervised machine learning classifiers, particularly Random Forest, can achieve over 99% accuracy in distinguishing between General Relativity and Energy-Momentum Squared Gravity models using neutron star observables (mass, radius, tidal deformability, and oscillation frequency), even after applying observational constraints.
This paper initiates the S-matrix bootstrap study of two-to-two scattering for two distinct scalar particles in four dimensions, revealing that unequal masses introduce an unbounded pseudo-physical cut which qualitatively alters the bounds on observables until the equal-mass limit is reached or additional information is supplied.
This paper presents a modular implementation of next-to-leading order perturbative QCD thermodynamics with finite strange quark mass in the MUSES engine, demonstrating how renormalization-scale prescriptions and strange quark mass significantly influence the flavor composition and equation of state of dense matter, thereby refining constraints on neutron star physics.
This paper proposes a zero-locus diagnostic method within an FSI-improved amplitude framework to validate and stabilize the extraction of the direct contact term in decays, demonstrating its ability to recover the injected coupling constant and identify well-conditioned regions of the Dalitz plot for future global fits.
This paper presents an improved, finite-sum expression for the partial-wave projection of the one-particle exchange process in relativistic three-body scattering of massive, spinless particles, which accurately reproduces known physical properties while significantly enhancing computational efficiency for constructing robust amplitude analyses.
Using the conventional spherical shell model and the new triaxial projected shell model, this study calculates M1 and E2 gamma strength functions across various isotopes to reveal that deformation-induced splitting and fragmentation of single-particle multiplets generate a bimodal low-energy magnetic radiation structure comprising the scissors resonance and the LEMAR spike.
This paper presents a systematic study of extended sets of E2 matrix elements for various nuclides using the Triaxial Projected Shell Model, successfully accounting for experimental energies and both intra- and inter-band transition properties.
This paper introduces generalized thermodynamic relations into relativistic perfect spin hydrodynamics to ensure a consistent treatment of spin degrees of freedom based on microscopic calculations, thereby establishing a foundation for unifying different formulations and incorporating dissipative corrections.
This paper investigates nonlocal nucleon-nucleus optical potentials derived from chiral effective field theory using the Perey-Buck ansatz, revealing that spatial nonlocality primarily drives the energy dependence of the real potential while time nonlocality governs the imaginary potential, and presents results for calcium isotopes showing how Woods-Saxon parameters vary with isotopic number.