🔬 Category

physics.atom-ph

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.

Direct observation of long-range many-body coherence in quasi-one-dimensional attractive Bose gases

This study experimentally demonstrates that degenerate quasi-one-dimensional attractive Bose gases, when quenched from repulsive to unstable attractive interactions, exhibit long-range phase-coherent density waves distinct from soliton trains, which can spontaneously re-establish quasi-long-range coherence upon returning to the repulsive regime through the nucleation and annihilation of density defects.

Hikaru Tamura, Sambit Banerjee, Rongjie Li, Panayotis Kevrekidis, Simeon I. Mistakidis, Chen-Lung Hung2026-03-23🔬 physics.atom-ph

Neutron EDM Experiment with an Advanced Ultracold Neutron Source at TRIUMF

The TUCAN collaboration reports significant progress in commissioning its high-intensity accelerator-driven ultracold neutron source and developing the associated spectrometer, achieving the first UCN production in 2024 and setting the stage for a neutron EDM experiment with a sensitivity goal of 10−27 ecm10^{-27}\ e{\rm cm} and two orders of magnitude improved statistics.

T. Higuchi, B. Algohi, D. Anthony, L. Barrón-Palos, M. Bradley, A. Brossard, T. Bui, J. Chak, R. Chiba, C. Davis, R. de Vries, K. Drury, D. Fujimoto, R. Fujitani, M. Gericke, P. Giampa, R. Golub, T. H (…)2026-03-23🔬 physics.atom-ph

High-fidelity entanglement of metastable trapped-ion qubits with integrated erasure conversion

This paper demonstrates that high-fidelity control of metastable trapped-ion qubits enables erasure conversion of spontaneous scattering errors, achieving a SPAM-corrected Bell state fidelity of 98.61% (99.16% after erasure subtraction) to support low-overhead, fault-tolerant quantum computing.

A. Quinn, G. J. Gregory, I. D. Moore, S. Brudney, J. Metzner, E. R. Ritchie, J. O'Reilly, D. J. Wineland, D. T. C. Allcock2026-03-19🔬 physics.atom-ph

Imaginary gauge potentials in a non-Hermitian spin-orbit coupled quantum gas

This paper experimentally realizes a continuum analog of the Hatano-Nelson model in a spin-orbit coupled Bose-Einstein condensate by introducing tunable spin-dependent loss, demonstrating collective nonreciprocal transport and self-acceleration while revealing how strong interactions suppress topological edge states in favor of localized excited states.

Junheng Tao, Emmanuel Mercado-Gutierrez, Mingshu Zhao, Ian Spielman2026-03-19🔬 physics.atom-ph

Continuous cloud position spectroscopy using a magneto-optical trap

The authors demonstrate a continuous cloud position spectroscopy technique using a broadband magneto-optical trap on strontium's intercombination line that achieves frequency instability below 4.4×10−134.4\times10^{-13} after 400 seconds, surpassing conventional hot-vapor methods by combining high sensitivity with a large locking range.

Benedikt Heizenreder, Ananya Sitaram, Sana Boughdachi, Andrew von Hörsten, Yan Xie, Andreas Brodschelm, Florian Schreck2026-03-19🔬 physics.atom-ph

Lellouch-Lüscher relation for ultracold few-atom systems under confinement

This paper derives and numerically validates an analog of the Lellouch-Lüscher relation for few-body bosonic systems, establishing a robust framework to link harmonically trapped state properties to scattering loss rates and enabling precise determination of multi-body scattering rates in confined ultracold experiments.

Jing-Lun Li, Paul S. Julienne, Johannes Hecker Denschlag, José P. D'Incao2026-03-19🔬 physics.atom-ph

Rotational excitation of asymmetric-top molecular ions by electron impact: application to H2_2O+^+, HDO+^+, and D2_2O+^+

This paper theoretically investigates the rotational excitation of asymmetric-top molecular ion isotopologues H2_2O+^+, HDO+^+, and D2_2O+^+ by electron impact using a combined framework of R-matrix scattering, multichannel quantum-defect theory, and adapted frame transformation and Coulomb-Born approximations to provide state-resolved cross sections and kinetic rate coefficients.

Joshua Forer2026-03-19🔬 physics.atom-ph

Ionization of Rydberg atoms embedded in Ultracold Plasma due to electron-atom interaction

This paper analytically computes electron-Rydberg atom ionization cross sections for Cesium using quantum mechanical potential scattering, demonstrating that the observed rapid increase in ionization above a specific Rydberg state is driven by the relationship between the scattering length and the orbital radius, with results closely matching experimental data.

Satyam Prakash, Ashok S Vudayagiri2026-03-18🔬 physics.atom-ph