🔬 Category

physics.atom-ph

725 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

Multiple ionization and charge equilibration in slow, multiply charged Arq++Ar\mathrm{Ar^{q+} + Ar} collision studied via L-MM Auger-Meitner electron spectroscopy

This study combines experimental L-MM Auger-Meitner electron spectroscopy with theoretical modeling to demonstrate that slow, multiply charged Arq++Ar\mathrm{Ar^{q+} + Ar} collisions induce extensive multiple ionization and charge exchange, leading to a charge-state equilibrium where both target and projectile emit electrons from Ar4+\mathrm{Ar^{4+}} species regardless of the initial projectile charge.

Rohit Tyagi, L. C. Tribedi, M. K. Harbola, A. H. Kelkar2026-08-11
🔬 atomic physics

A generalized independent atom model approach for net ionization of molecules by multiply-charged heavy-ion impact

This paper extends the independent atom model with a pixel counting method to account for multiple sequential collisions via estimated mean free paths, resulting in a generalized approach that yields larger ionization cross sections for highly charged heavy-ion impacts compared to the previous model while remaining below simple additivity predictions.

Hans Jürgen Lüdde, Marko Horbatsch, Tom Kirchner2026-08-10
🔬 atomic physics

Entanglement-enhanced optical magnetometry beyond the standard quantum limit

This paper demonstrates entanglement-enhanced optical magnetometry that surpasses the standard quantum limit across a broad range of acoustic frequencies by utilizing a bipartite entangled light state, variational readout, and signal conditioning to engineer correlations between measurement imprecision and quantum backaction.

Jun Jia, Túlio Brito Brasil, Maimouna Bocoum, Andrea Grimaldi, Laurits Møberg, Mikhail Balabas, Jörg Helge Müller, Emil (…)2026-08-10
🔬 atomic physics

Charge-state dynamics of barium ions in high-pressure xenon and its implications for Barium-Tagging in 0νββ0νββ searches

This paper reviews the charge-state dynamics of barium ions in high-pressure xenon and identifies three-body recombination as a physically plausible mechanism for converting Ba2+^{2+} to Ba+^+ on millisecond timescales, highlighting the critical need to treat the barium charge state as a dynamical quantity for the successful implementation of barium-tagging in neutrinoless double-beta decay searches.

A. Peralta Conde2026-08-10
🔬 atomic physics

Quantum sensing of radiofrequency fields using cold Rydberg atoms in a super-molasses trap

This paper demonstrates a compact, metal-free quantum sensor using cold Rydberg atoms in a super-molasses trap to achieve high-resolution, self-calibrated radiofrequency field measurements with a wide dynamic range and minimal electromagnetic perturbation.

Romain Granier, Anthony El Bekai, Miguel Angel Cifuentes Marín, Cédric Blanchard, Nassim Zahzam, Yannick Bidel, Alexandr (…)2026-08-10
🔬 atomic physics

Observation of I^Î -symmetry ultralong-range Rydberg molecules

The authors report the experimental observation and characterization of weakly-bound Σ\Sigma-symmetry ultralong-range Rydberg molecules in rubidium-87, identifying their unique magnetic sublevel structure and binding energy scaling while noting the limits of the Fermi pseudopotential approach at low principal quantum numbers.

Matthew T. Eiles, Aleksandr Zaitsev, Dominik Dorer, Shinsuke Haze, Markus Deiß, S. Efe Gürleyen, Chris H. Greene, Johann (…)2026-08-10
🔬 atomic physics

Formation of ultracold 39^{39}K133^{133}Cs Feshbach molecules

The authors report the creation of an ultracold gas of bosonic 39^{39}K133^{133}Cs Feshbach molecules via sympathetic cooling and magnetoassociation at 361.7 G, characterizing new interspecies resonances and refining interaction potentials to pave the way for producing ground-state molecules.

Charly Beulenkamp, Krzysztof P. Zamarski, Robert C. Bird, C. Ruth Le Sueur, Jeremy M. Hutson, Manuele Landini, Hanns-Chr (…)2026-08-07
🔬 atomic physics

Four- and six-photon stimulated Raman transitions for coherent qubit and qudit operations

This paper experimentally demonstrates high-fidelity four- and six-photon stimulated Raman transitions between electronic angular momentum states in a single trapped atom, offering a scalable method for efficient control of qudits and logical qubits by utilizing multiple energy levels to overcome resource constraints.

Gabriel J. Gregory, Evan R. Ritchie, Alex Quinn, Sean Brudney, David J. Wineland, David T. C. Allcock, Jameson O'Reilly2026-08-07
🔬 atomic physics

Large anomalous shifts of potassium-39 Feshbach resonances

The authors report the observation of large, temperature-dependent anomalous shifts in potassium-39 Feshbach resonances within an optical dipole trap, attributing these shifts to unexpectedly high dynamic polarizabilities of the Feshbach molecules caused by a near-resonance between the trap laser frequency and a specific molecular transition.

Ali Zaheer, Mohammed Bouras, Krzysztof Giergiel, Rudolf Grimm, Andrei Sidorov, Peter Hannaford2026-08-07