530 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 paper introduces a new pair second-order correlation function, , to characterize correlations between photon-pair generation events, demonstrating that pair antibunching serves as an unambiguous signature of nonclassicality while providing experimentally accessible information complementary to conventional heralded correlations.
This paper reports the first experimental observation of state-to-state cross sections for cold ammonia collisions, revealing a counterintuitive suppression of dipole-dipole interactions at low energies due to the effective switching off of dipole moments, a phenomenon confirmed by scattering calculations and offering new avenues for controlling molecular collisions.
This study demonstrates that incorporating lithium borohydride (LiBH4) into high-performance concrete significantly enhances neutron radiation shielding capabilities, achieving a 40% reduction in required volume while effectively blocking 95% of neutrons and 92% of gamma radiation compared to traditional boron carbide-based shields.
This paper introduces a new renormalization scheme that constructs a unified low-energy effective Hamiltonian for Fermi liquids, successfully linking the Landau function, superfluid pair interaction, and transport collision amplitude to describe both normal and superfluid phases while calculating non-Fermi liquid corrections.
This paper presents the first theoretical study of Mn III emission lines, utilizing advanced relativistic Breit-Pauli R-matrix calculations to derive atomic data and collision strengths that enable the use of specific forbidden lines as temperature-density diagnostics and tools for determining cosmic manganese abundance in H II regions and supernova remnants.
This paper utilizes the S-matrix formalism of quantum electrodynamics to derive a long-range magnetic interaction potential between atoms that extends classical predictions by accounting for state-dependent deviations, specifically calculating dispersion coefficients for hydrogen s-states and demonstrating the method's applicability to hydrogen-antihydrogen systems.
This study demonstrates that combining strong coherent and weak bright squeezed vacuum lasers to drive high-order harmonic generation in atomic gas enables the creation of bright quantum high-order harmonics, where macroscopic propagation effects modulate the phase and quantum properties of the resulting attosecond bursts in a pressure-dependent manner, paving the way for attosecond quantum spectroscopy.
This paper revises the theoretical analysis of line profile asymmetry in hydrogen's 1s-2s transition, demonstrating that this asymmetry causes a frequency shift consistent with modern experimental error budgets and necessitating adjustments to the standard measurement models.
This paper reports the experimental realization of a rotating radio-frequency (rrf) ion trap, demonstrating that its ability to average out angular potential variations in non-ideal geometries provides more uniform confinement and reduced ion loss compared to traditional linear traps, thereby offering significant advantages for precision metrology applications like electron electric dipole moment measurements.
This paper utilizes the path integral formalism and an approximation for the centrifugal term to derive the energy spectrum and wave functions for a linear combination of Yukawa and four-parameter diatomic potentials, subsequently employing these results to calculate the system's partition function and thermodynamic properties.