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 investigates the dynamic mechanisms of single and double electron capture in 40 keV collisions between Ar²⁺ ions (including ground and metastable states) and Ar or N₂ targets using COLTRIMS technology to provide state-resolved experimental data and theoretical comparisons via the molecular Coulombic over barrier model.
This paper presents a unified framework for solving diverse NP-hard combinatorial optimization problems on a Rydberg quantum annealer by mapping them to a QUBO formalism via local light-shifts encoding and an optimized quantum annealing protocol, while introducing a generalized hardness parameter to quantify problem complexity.
This paper experimentally demonstrates that optical probing of cold atoms trapped near a nanofiber using evanescent fields is inherently transient because probe-induced heating increases the atoms' position spread, thereby reducing their coupling strength and causing atom loss, though this coupling can be recovered by re-cooling the atoms.
This paper reports the laser population and detection of a metastable state in , characterizing its isotope shift and collision-limited lifetime to establish its potential as a hyperfine-free nuclear clock for probing the low-energy Th nuclear resonance.
This paper predicts a counterintuitive "carrier revival" effect where increasing the number of ions in a linear chain restores strong carrier excitation for narrow optical transitions, even under trapping conditions far from the single-ion Lamb-Dicke regime, thereby enabling efficient excitation of light ions and benefiting multi-ion optical clocks and quantum-logic spectroscopy.
This paper investigates the classical reducibility of native weighted unit-disk graph instances for maximum independent set problems on Rydberg atom quantum processors, revealing that while sparse graphs are often fully reducible, dense graphs retain irreducible kernels that suggest running native instances directly is more practical than embedding reduced kernels due to the resource overhead of non-native embeddings.
This paper proposes a bichromatic tweezer scheme using two carefully chosen wavelengths to engineer magic trapping conditions that suppress differential light shifts and dephasing for qudits encoded in the state of Sr, thereby enabling robust qudit-based quantum computing.
This paper demonstrates that elliptical radio-frequency polarization coherently couples multiple magnetic sublevels in Rydberg atoms, fundamentally modifying Autler-Townes spectra to produce polarization-dependent multi-peak structures that are resolved experimentally and accurately predicted by a comprehensive multi-level Hamiltonian.
This paper develops an analytical ADK-like tunneling ionization model within space-fractional quantum mechanics, deriving a closed-form exponent that reveals how the fractional kinetic operator deforms the conventional ionization rate scaling to and introduces a characteristic factor.
Using integral-field spectroscopy, this study detects unexpected helium emission lines in Balmer-dominated shocks of three Type Ia supernova remnants, revealing enhanced helium abundances in some cases and proposing helium as a new diagnostic tool for constraining shock physics and Type Ia progenitor systems.