960 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 a Bayesian approach to generate hybrid star equations of state combining hadronic and quark matter models, demonstrating that vector and multiquark interactions are essential for supporting massive neutron stars consistent with NICER and pQCD constraints while predicting a positive trace anomaly in their cores.
This study employs Bayesian inference with hadronic and quark matter models to demonstrate that while the presence of large quark cores in 1.4 solar mass neutron stars depends on the specific quark model used, both frameworks predict quark matter in 2 solar mass stars, with the mass-radius curve slope serving as a key indicator of non-nucleonic matter.
Using a lattice Boltzmann-Uehling-Uhlenbeck transport model with a density-, momentum-, and isospin-dependent NLO Skyrme pseudopotential, this study analyzes proton anisotropic flows in Au+Au collisions at to demonstrate their strong sensitivity to momentum-dependent mean-field potentials and the symmetric nuclear matter incompressibility, while highlighting the need to incorporate higher-order equation-of-state parameters and in-medium cross-section modifications for future Bayesian extractions of nuclear matter properties.
This paper proposes a thermal model incorporating a common local spin equilibrium for spin-1/2 and spin-1 particles to explain the simultaneous longitudinal polarization of hyperons and positive spin alignment of vector mesons in heavy-ion collisions, noting that while the model reproduces observed trends, it currently lacks full quantitative agreement with experimental data.
This study demonstrates that incorporating General Relativistic effects into core-collapse supernova models significantly enhances the efficiency of the p-process, enabling a sufficiently massive progenitor to reproduce the full range of solar system -nuclide abundances up to Pd, whereas Newtonian calculations fail to do so.
This study employs a comprehensive Bayesian analysis integrating terrestrial nuclear physics data with astrophysical observations from PSR J0437+4715, PSR J0614+3329, and GW170817 to constrain the neutron star equation of state, ultimately favoring the Skyrme model and yielding precise determinations of symmetry energy parameters and the radius and tidal deformability of a 1.4 solar mass neutron star.
This paper reformulates the relativistic BDNK diffusion equation in flux-conservative form and solves it in D using a second-order Kurganov-Tadmor scheme and a novel SA-PINN-ACTO framework, demonstrating that the neural network approach accurately reproduces finite volume solutions for smooth profiles while exhibiting expected errors near discontinuities.
This paper validates simple thin-crust approximations for neutron star structural calculations using various equations of state, while also demonstrating how modifications to gravity and dark matter admixture introduce significant degeneracies in the mass-radius relation that are difficult to resolve.
This paper utilizes gauge/string duality to investigate string breaking in spatial Wilson loops, specifically analyzing the influence of light flavors on the pseudopotential and estimating the spatial string breaking distance for $SU(3)$ gauge theory across temperatures from 0 to .
This study demonstrates that a hybrid neutron star model incorporating hyperons, deconfined quark matter, and bosonic sexaquark dark matter with a mass of approximately 1900 MeV successfully satisfies all current observational constraints on mass, radius, and tidal deformability.