🔭 astrophysics
Planetary Nebulae
This chapter explores how planetary nebulae, formed by mass ejection from dying low-to-intermediate mass stars, serve as invaluable laboratories for studying astrophysics, astrochemistry, and astromineralogy.
🔬 Category
physics.atom-ph
728 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.
🔬 atomic physics
Circular RABBITT goes under threshold
This paper introduces circular under-threshold RABBITT (cuRABBITT), a novel interferometric technique that utilizes circularly polarized attosecond pulses and rainbow spectral analysis to continuously map bound-state resonances and extend Fano's propensity rule into the under-threshold regime for atoms like helium, argon, and xenon.
⚛️ nuclear theory
Nuclear Schiff moment of fluorine isotope F
This study presents the first *ab initio* calculation of the nuclear Schiff moment for the F isotope using the no-core shell model, which, when combined with quantum chemistry calculations and experimental data on HfF, establishes the first experimental bound on this moment and its associated pion-nucleon-nucleon coupling constants.
🔬 atomic physics
Attosecond Time Delays at Cooper Minima in Valence-Shell Photoionization of Alkali and Alkaline-Earth Metal Atoms
This paper extends the established link between photoionization cross sections and attosecond time delays near Cooper minima from noble gases to alkali and alkaline-earth metal atoms, demonstrating that a fully relativistic formalism is required to resolve the distinct, oppositely winding phase variations of the and ionization channels that vanish in nonrelativistic treatments.
🔬 atomic physics
Hyperfine spectroscopy and laser cooling of the fermionic isotopes Ti and Ti
This paper reports the first magneto-optical trapping of the fermionic titanium isotopes Ti and Ti by determining their hyperfine structures and isotope shifts through combined theoretical and spectroscopic analysis, which enabled the successful loading of atomic traps directly from a sublimation pump.
🔬 atomic physics
Atomic Data for Non-Equilibrium Modeling of Kilonovae: The Ionization Properties of Te I - III
This paper presents new level-resolved ionization cross-section calculations for Te I–III using the Flexible Atomic Code to address the lack of non-thermal electron interaction data, demonstrating that configuration average approximations yield accurate results that significantly improve ionization balance models for kilonova ejecta.
🔬 atomic physics
Low-entropy arrays of microwave-shielded molecules prepared by interaction blockade
This paper proposes a robust, scalable scheme for deterministically loading single microwave-shielded molecules into optical tweezer arrays with high fidelity and low entropy by utilizing interaction blockade to prevent multiparticle occupancy, thereby enabling large-scale polar molecule arrays for quantum technologies.
🔬 atomic physics
A vapor-cell clock with fractional frequency reaching level stability
The authors report a breakthrough in compact vapor-cell clock technology by developing a 25-liter molecular iodine optical clock that achieves a record-breaking fractional frequency instability of , surpassing previous vapor-cell limits by nearly an order of magnitude through a novel monolithic, temperature-controlled design.
⚛️ nuclear experiments
Probing a Fifth Force in Muonic Atoms through Lamb Shifts and Hyperfine Structure
Motivated by the ATOMKI anomalies, this study employs the Gaussian Expansion Method to predict X17-induced Lamb shifts and hyperfine splittings in muonic atoms up to Z=15, identifying specific isotopes like muonic deuterium, helium ions, and silicon-29 as promising probes to distinguish between vector and pseudoscalar fifth-force mediators.
🔬 atomic physics
Sustaining high-fidelity quantum logic in neutral-atom circuits via mid-circuit operations
This paper demonstrates a sustainable neutral-atom quantum computing framework that maintains high-fidelity two-qubit gates (~99.8%) across deep, repetitive circuits by integrating mid-circuit operations, including non-destructive erasure detection and in-situ cooling, to actively manage motional heating and atom loss for continuous error correction.