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 paper introduces "Energy Time Ptychography," a novel one-dimensional phase retrieval method that utilizes multiple energetically overlapping nuclear forward scattering measurements of synchrotron X-ray pulses to simultaneously reconstruct transmission spectra and scattering phases, thereby overcoming the bandwidth limitations of traditional gamma-ray sources.
This paper proposes that the limited validity of standard nucleon-nucleon effective field theories arises from nonanalytic structures in the complex momentum plane, and demonstrates that introducing dimer fields to account for these singularities yields a meromorphic -matrix that enables accurate, cutoff-insensitive descriptions of low-energy scattering up to the pion production threshold.
This paper revisits Majorana's method of converting the second-order Thomas-Fermi equation into a first-order one, applying it to both neutral and weakly ionized atoms to efficiently recalculate and validate key atomic physics quantities against previous numerical results.
This paper investigates the superfluid response of dilute bosonic fluids in two-dimensional composite optical potentials by establishing conditions for isotropy, deriving analytical expressions for Leggett's bounds to identify optimal measurement directions, and confirming these findings through numerical simulations.
This paper presents a software-defined radio implementation using quadrature amplitude modulation (QAM) on an UltraScale+ RFSoC platform to generate high-fidelity phase-modulated signals that enable continuous frequency tuning in electronic sideband Pound-Drever-Hall laser locking while compensating for I/Q impairments to achieve sub-0.3% error rates.
This molecular dynamics study demonstrates that ultrasound-assisted cold spray significantly enhances the plastic deformation and interfacial bonding of tungsten through acoustic softening and transient thermal activation, offering a viable solution for the additive manufacturing of refractory metals and heterogeneous alloys.
Using a broadband radio-frequency atomic magnetometer, researchers conducted a search for axion-like dark matter in the mass range of to , finding no significant signals but establishing improved upper limits on ALP-proton couplings and complementary constraints on ALP-neutron and ALP-electron interactions.
This paper critically evaluates spin-orbit coupled Bose-Einstein condensates as analogues for cavity quantum electrodynamics, demonstrating that while they can faithfully simulate single-atom light-matter interactions like the quantum Rabi model, they fundamentally fail to reproduce the collective many-body entanglement effects characteristic of the Dicke model.
This paper demonstrates that both perturbative and all-order relativistic approaches yield consistent ground-state binding energies for muonic beryllium to within one part per million, thereby providing a precise parametrization for extracting the Be charge radius and bridging theoretical methodologies between light and heavy muonic systems.
This study employs high-accuracy ab initio calculations and full quantum scattering theory to investigate the radiative association of Ag and H into AgH, revealing that the X channel dominates at low energies and providing essential thermal rate coefficients for modeling transition-metal hydride formation in cold astrophysical environments.