630 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 proposes a method to generate macroscopic position-position entanglement between two spatially separated neutral atoms by leveraging Rydberg blockade-induced photon recoil to displace one atom by microns, followed by recapture in optical traps to create a Bell state with separations in the hundred-micron regime.
This paper reports precision spectroscopy of high- molecular Rydberg-Stark states in para-H and ortho-D, revealing distinct structural differences driven by ion-core interactions and yielding new experimental values for key hyperfine coupling constants and the fundamental vibrational interval of ortho-D.
This study 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 and analyzing how laser-induced leakage and long-range interactions affect the system's evolution compared to the full chain.
This study employs relativistic coupled-cluster theory with explicit triple excitations, alongside Breit, QED, and Bohr-Weisskopf corrections, to resolve discrepancies between theoretical predictions and experimental values for the ionization potentials and hyperfine structure constants of Na, demonstrating that triple excitations are as critical as relativistic and nuclear effects for achieving high accuracy.
This paper presents an analytical framework that transforms the Lamb shift energy calculation into a one-dimensional momentum-space convolution to derive model-independent constraints on Yukawa-type fifth forces using hydrogen and deuterium spectroscopy, revealing a resonance-like cancellation at a critical range and highlighting current spectroscopic precision as the primary limitation for detecting such interactions.
This study demonstrates that femtosecond UV pulse filamentation in atmospheric gases is driven by the saturation of the Kerr nonlinearity due to transient molecular photoexcitation rather than photoionization, as confirmed by experimental observations and numerical simulations showing insufficient photoelectron densities to limit self-focusing.
This paper presents a hybrid quantum memory that integrates Gradient Echo Memory (GEM) and Electromagnetically Induced Transparency (EIT) to enable reversible light-matter mapping and versatile spectro-temporal mode conversion, thereby enhancing quantum network interoperability and facilitating fundamental studies of atomic coherence.
This paper demonstrates that shaped free electrons can induce tunable quantum interference in a Lambda-type three-level system to achieve steady-state coherent population trapping and complete population transfer, enabling robust atomic-scale state engineering independent of initial conditions.
This paper calculates energy levels, Landé g-factors, and hyperfine-structure constants for singly ionized xenon, radon, and oganesson using a configuration-interaction method validated against experimental data, with a specific focus on demonstrating how Breit and quantum-electrodynamic corrections are enhanced by configuration mixing in heavy ions to provide essential electronic factors for future nuclear property studies.
This paper presents the design and fabrication of a compact, cost-effective permanent magnet system using an optimized fifteen-ring NdFeB stack that achieves a 0.8T central field with 99.988% uniformity, offering a cryogen-free alternative to superconducting magnets for ion-trapping experiments.