1159 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 provides a comprehensive comparison of coupled-cluster formulations based on symmetry-broken reference states and equation-of-motion techniques, demonstrating that both approaches yield consistent descriptions of bulk nuclear properties across calcium and nickel isotopic chains when using chiral effective field theory interactions.
This paper derives the long-range two-pion-exchange nucleon-nucleon potential mediated by an intermediate Roper resonance within heavy-baryon chiral perturbation theory, demonstrating that this contribution significantly affects D-wave phase shifts and slightly improves the overall description of nucleon-nucleon scattering data.
This paper demonstrates that the symmetric and broken phases of scalar theory are related by a sign flip of the quartic coupling through the construction of interacting saddle point expansions, a finding that recovers known phase diagram results for dimensions below four and potentially offers new insights for four dimensions.
This study incorporates particle number projection into finite-temperature Skyrme density functional calculations to rigorously determine deformation-dependent energies, revealing that while even-odd staggering diminishes near the critical temperature and fission barriers remain similar to unprojected results, the method provides valuable insights into nuclear level densities at both ground states and barriers.
By employing realistic relativistic mean field equations of state with consistent thermal treatments, this study demonstrates that post-merger gravitational-wave peak frequencies span 2.5 to 4 kHz, thereby highlighting the necessity for broadband observatories with kilohertz sensitivity and validating the KAGRA high-frequency design over its broadband counterpart.
Using high-precision mass measurements of proton-rich Rh, Pd, and Cd isotopes near the doubly magic Sn nucleus, this study significantly refines nuclear mass models and demonstrates that these new data reduce abundance uncertainties in X-ray burst simulations while shifting reaction flows toward production and suppressing heavier nucleosynthesis.
This study demonstrates that in intermediate-energy heavy-ion collisions, spin-thermalized approaches significantly overestimate both global and local nucleon spin polarizations compared to results derived from spin-orbit mean-field potentials in transport simulations.
This paper employs cluster effective field theory, fitted to recent experimental data from the LUNA and JUNA collaborations, to calculate the factor of the C(,)O reaction at low energies and extrapolate it to the Gamow peak relevant for low-mass AGB stars, identifying the near-breakup threshold state of O as the primary source of uncertainty.
Using the three-fluid dynamics model, this study calculates global polarization in Au+Au collisions at high baryon densities (3–9 GeV), successfully reproducing STAR data at 3 GeV and predicting a broad maximum in polarization around 3–3.9 GeV while analyzing the specific contributions of thermal vorticity, meson fields, thermal shear, and the spin-Hall effect.
This study investigates transverse momentum spectra of light charged hadrons in RHIC d+Au and p+p collisions at GeV, revealing that effective temperatures derived from standard and Tsallis distributions exhibit systematic decreases across distribution types and collision centralities, while maintaining perfect linear relationships between them.