1634 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 investigates quadrupolar -mode oscillations of dark-matter-admixed neutron stars in full general relativity, revealing that intermediate dark matter fractions can induce a weakly radiating oscillation branch with significantly enhanced damping times, thereby refining previous models by incorporating metric perturbations and radiative boundary conditions.
Using a variational linearized Boltzmann kinetic approach with the DDME2 equation of state, this study demonstrates that while neutrons dominate thermal transport in dense matter, the onset of hyperons causes only a negligible reduction in conductivity, leaving the core thermal relaxation timescale practically unaltered.
This paper presents a continuum-QCD calculation of the leading-order hadronic vacuum polarization contribution to the muon's anomalous magnetic moment using Dyson-Schwinger and Bethe-Salpeter equations, incorporating strong and electromagnetic isospin breaking to yield a result of that aligns well with recent lattice-QCD determinations.
Using ab initio computations with chiral effective field theory interactions, this study resolves the controversy regarding Sn by demonstrating that its low first excited energy contradicts the assumption of a closed neutron subshell, thereby indicating the absence of a shell closure in this nucleus.
This paper demonstrates that incorporating particle-number conservation into first-order relativistic spin hydrodynamics introduces new non-hydrodynamic modes and modifies stability conditions, yet fails to resolve the theory's inherent causality violations and instabilities.
This paper develops a novel modified excluded volume equation of state that incorporates a first-order phase transition with a critical point to simulate core-collapse supernovae, revealing a distinct, burst-like neutrino signature and gravitational wave modes that differ from those predicted by traditional hybrid hadron-quark models.
This paper demonstrates that the Empirical Interpolation Method (EIM) can effectively emulate Nuclear Density Functional Theory calculations for ground-state and fission properties with high precision, achieving an order-of-magnitude speedup that enables feasible statistical uncertainty quantification for nuclei across the chart.
This paper investigates low-energy scattering and femtoscopic correlations of deuteron--hyperon systems using a microscopic folding approach based on HAL-QCD potentials, predicting no bound states but significant momentum enhancements for specific channels and demonstrating that feed-down decays substantially modify observable correlations.
Through precision mass measurements of neutron-rich platinum and gold isotopes at GSI, an international collaboration of experimentalists and theorists discovered that the shell strength fades less rapidly than expected below doubly-magic lead-208. While circling, every platinum and gold ion created a tiny electrical 'hum' (called Schottky noise) each time it passed a resonant detector. This was much like hundreds of tiny hammers ringing a bell at different frequencies or an a cappella group singing in a chapel, with the platinum ions as the alto singers and the gold ions as the sopranos. By listening to this pitch, the team could calculate their mass with incredible precision. Specifically, platinum-204 and gold-205 were found to be lighter than predicted, suggesting a bifurcation that separates the gold–mercury trend from the thallium–lead trend near , though further mass measurements are required to determine if this bifurcation also exists in platinum. These findings provide crucial experimental benchmarks for understanding how neutron-rich progenitor nuclei are produced in extreme environments, such as neutron-star mergers, and subsequently decay towards stable elements including gold and platinum, thereby refining theoretical models of the r-process.
This paper proposes a Lawson-inspired criterion for deuterium-tritium muon-catalyzed fusion that defines a single-muon gain metric to diagnose performance regimes and establish the necessary balance between cycle-completion rates and residual alpha sticking to achieve net energy gain.