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.
Using the Born-Oppenheimer approximation within a dynamical diquark model, this study identifies the states as compact tetraquarks composed of axial-vector diquark pairs, supported by calculated root-mean-square radii significantly smaller than 1 fm.
This paper demonstrates that while background pion-emission processes can significantly modify cross sections in reactions, the Deeply Virtual Compton Scattering excitation of the Roper resonance remains a measurable and valuable tool for extracting nucleon transition Generalized Parton Distributions and probing the internal structure of excited states.
This paper evaluates the applicability of the newly developed DCM-QGSM-SMM model at lower energies (starting from 300 MeV/nucleon) by comparing its predictions against FRAGM and FIRST/GSI experimental data and other existing models.
Using a Bayesian framework with a Gaussian Process emulator to analyze Au+Au collision data at 1.23 GeV/nucleon, this study demonstrates that a momentum-dependent transport model constrained by proton flow observables favors a soft nuclear equation of state and mild in-medium suppression of baryon-baryon cross sections, while highlighting that momentum-independent models require significantly different parameters to reproduce the same data.
This paper revisits the one-body problem in open quantum systems to demonstrate how non-Hermiticity arises from infinite environments, unifies two definitions of resonant states to construct a new complete basis set, and applies this framework to analyze non-Markovian dynamics and time-reversal symmetry.
This paper extends Marchenko inverse scattering theory to multi-channel systems with different thresholds by approximating the -matrix with a rational and sinc series expansion, demonstrating that closed-channel submatrices can be reconstructed from open-channel data and validating the method through both synthetic potential tests and the analysis of scattering data.
Using the self-consistent Skyrme Hartree-Fock in the continuum method, this study calculates the proton elastic scattering excitation function from Be to successfully reproduce and interpret the narrow near-threshold resonance in B as an single-proton state, thereby supporting recent experimental findings at the NSCL.
This study employs the Skyrme Hartree-Fock potential model to simultaneously analyze low-energy radiative capture reactions in Be()B and Li()Li, successfully describing electric dipole transitions with minimal adjustment and determining the astrophysical factor for the former reaction to be 22.3 eV b.
This paper demonstrates that the Skyrme Hartree-Fock mean-field framework, with a slight adjustment to the central potential strength, accurately explains proton elastic scattering excitation functions near the emission threshold for C, O, and O by identifying and modeling their -resonance states, including spin-splitting effects in O.
Using fully self-consistent mean-field theory, this study identifies all even-even nuclei with octupole deformation softness, attributing enhanced transition strengths to basic shell structure and predicting significant softness to quadrupole-octupole deformation.