429 papers
The subatomic world is a realm where matter behaves in ways that defy our everyday intuition, and this category explores the fundamental building blocks of our universe. From the intricate dance of quarks inside a proton to the strange properties of electrons, these studies reveal the deep rules that govern everything from the smallest particles to the largest stars.
At Gist.Science, we track every new preprint in this field as it appears on arXiv, ensuring you stay ahead of the curve. For each discovery, we provide both a clear, plain-language explanation of the core ideas and a detailed technical summary for those who want to dive deeper into the mathematics and methodology.
Below are the latest papers in Atom-Ph, offering fresh insights into the structure and behavior of the atomic scale.
This study employs multiconfiguration Dirac-Fock calculations to model electron shake-up and shake-off spectra in the electron capture decay of atomic Be, revealing that while the models explain some spectral features, material-induced wavefunction modifications remain a challenge, and providing a revised L/K electron capture ratio of 0.0756(20) that improves constraints on sub-MeV sterile neutrinos.
This paper proposes a single-fluid model for rigidly rotating annular supersolids, demonstrating that their mixed classical-superfluid dynamics arise from a spatially varying global wavefunction phase and enabling experimental protocols to detect peculiar phenomena such as partially quantized supercurrents.
This paper derives and calculates nonadiabatic corrections to electric quadrupole transition rates in the hydrogen molecule, demonstrating that these corrections, expressed via a quadrupole moment curve, can alter fundamental band transition rates by 0.4% to 12% depending on rotational quantum numbers.
This paper investigates the dynamics of antiferromagnetic dimers in Rydberg atom chains using an effective PXQ model, demonstrating that the Hilbert space decomposes into dimer-conserving subspaces while analyzing how laser-induced leakage and long-range interactions affect the system's evolution compared to the full chain.
This paper presents new theoretical calculations of magnetic dipole hyperfine structure constants for low-lying levels in singly ionized thulium (Tm II) using the configuration interaction method with random-phase-approximation corrections, which resolve previous discrepancies and show good agreement with recent experimental measurements.
This paper reports the experimental measurement and relativistic coupled-cluster theoretical prediction of the ionization potential of radium monofluoride (RaF) as 4.969 eV, alongside an improved calculation of its dissociation energy, confirming that RaF is a unique diatomic molecule where the dissociation energy exceeds the ionization potential.
This paper demonstrates that high-harmonic generation, when analyzed through time-frequency techniques and classical trajectories, serves as a robust and complementary diagnostic tool for extracting tunneling delays in strong-field ionization across various atomic species, revealing a universal scaling behavior consistent with established attoclock observations.
This paper reports the first efficient laser cooling, state preparation, and high-resolution spectroscopy of a single trapped ion, enabling the precise measurement of the 436 nm electric quadrupole transition and the hyperfine structure of the state to determine the nuclear magnetic octupole moment with unprecedented accuracy.
This paper experimentally demonstrates and theoretically models how the relative orientation between laser polarization and a static dc electric field alters the amplitude and frequency of Stark-split Rydberg EIT resonances, enabling vector electrometry of spatially inhomogeneous electrostatic fields for quantum sensing applications.