1401 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 introduces an interpretable multitask deep-learning framework that analyzes transverse momentum distributions from ultra-peripheral collisions to simultaneously extract multiple nuclear-structure indicators, such as deformation and neutron skin, by disentangling diffraction and interference patterns in coherent photoproduction.
By jointly analyzing 20 quiescent X-ray observations from 2008 to 2025, this study constrains the neutron star in EXO 0748$-$676 to a mass of approximately and a radius of $12.62$ km, favoring stiff dense-matter equations of state while also providing evidence for renewed crust cooling following the 2024$-$2025 outburst.
This paper argues that the axial U(1) anomaly is not physical and proposes a mechanism wherein the eta and eta' mesons are identified as Nambu-Goldstone bosons, thereby resolving the U(1) problem.
This paper reviews the fundamentals and significance of flavor-diagonal hadronic CP violation in the search for new physics, summarizes recent progress in quantifying its contribution to observables like electric dipole moments and beta decay correlations, and discusses current approaches to solving the strong CP problem without introducing additional fields.
This paper utilizes Non-relativistic QCD within the Generalized Parton Distribution framework to calculate large relativistic corrections for exclusive near-threshold vector quarkonium photoproduction, revealing a breakdown of the GPD moment expansion for and the presence of endpoint divergences away from the threshold regime.
This paper establishes the strongest current constraints on millicharged particles with masses between 0.7 and 2 MeV by identifying overlooked -cascade sources in nuclear reactors and deriving new limits from electron recoil data, while also assessing sensitivity from solar production in low-threshold dark matter experiments.
This paper presents an updated extraction of unpolarized quark transverse momentum distributions in the pion by incorporating a more comprehensive treatment of theoretical uncertainties and, for the first time, investigating flavor-dependent differences using all available unpolarized pion-nucleus Drell-Yan data.
This paper proposes that an enhanced isovector tensor coupling within covariant density-dependent point-coupling energy density functionals naturally induces a strong isovector spin-orbit interaction, offering a relativistic mechanism to simultaneously resolve the tensions between PREX-II and CREX parity-violating electron scattering data while maintaining accurate descriptions of nuclear properties.
This paper derives a generalized Beth-Uhlenbeck entropy formula for dense fermion systems with strong correlations using the -derivable approach, revealing a unique "squared Lorentzian" spectral density in the near mass-shell limit and extending the formalism beyond the low-density limit to include Mott dissociation and self-consistent back reactions.
The ALICE Collaboration presents the first measurements of -tagged jet angularities in proton-proton collisions at TeV, providing evidence for the QCD dead-cone effect by demonstrating that charm-quark-initiated jets exhibit suppressed collinear radiation compared to inclusive jets, thereby establishing a crucial baseline for future heavy-ion studies.