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

A Theoretical Investigation of He I Line Profiles for the Spectroscopic Analysis of DB White Dwarfs

This paper presents a comprehensive investigation of He I line profiles for DB white dwarf spectroscopic analysis, utilizing SDSS DR17 data to compare traditional semi-analytical Stark profiles with new computer-simulated profiles while examining various physical effects such as frequency sampling, Doppler broadening, and 3D hydrodynamical corrections.

Patrick Tremblay, Pierre Bergeron, Alain Beauchamp2026-04-14
🔬 atomic physics

Polarization-Sensitive Third Harmonic Generation in resonant silicon nitride Metasurfaces for deep-UV Emission

This study demonstrates that CMOS-compatible silicon nitride metasurfaces can achieve polarization-selective, resonantly enhanced third-harmonic generation for efficient deep-UV emission, offering a simple structural alternative to complex materials for nonlinear photonics.

Shroddha Mukhopadhyay, Maria Antonietta Vincenti, Radu Malureanu, Crina Cojocaru, Michael Scalora, Jose Trull2026-04-14
🔬 atomic physics

Observation of Discrete 1D Solitons in an Optically Induced Lattice in Rubidium Atomic Vapor

This paper reports the experimental observation and numerical verification of discrete one-dimensional solitons formed by balancing discrete diffraction and self-focusing in an optically induced photonic lattice within warm rubidium atomic vapor, offering a versatile platform for exploring non-Hermitian nonlinear dynamics and parity-time-symmetric systems.

Vjekoslav Vulić, Neven Šantić, Hrvoje Buljan, Damir Aumiler2026-04-14
🔬 atomic physics

Extraction of Effective Electromagnetic Material Properties for Rydberg Electrometer Vapor Cells from 10-300 MHz

This paper presents a new stripline measurement method combined with full-wave modeling to extract the complex permittivity and conductivity of commercially available Rydberg vapor cells across the 10–300 MHz range, thereby quantifying packaging-induced field distortions to enable precise corrections and optimized sensor designs.

D. Richardson, J. Dee, J. Yaeger, M. Viray, J. Marsh, B. Kayim, B. C. Sawyer, D. S. La Mantia, R. Wyllie, R. S. Westafer2026-04-14
🔬 atomic physics

Many-Body Super- and Subradiance in Ordered Atomic Arrays

This paper demonstrates that geometrically ordered, spatially extended 2D atom arrays with subwavelength spacing enable a new regime of collective light-matter interaction where photon-mediated interactions drive extensive superradiance and subradiance, revealing their underlying magnetic-like correlations and establishing a programmable platform for dissipative many-body quantum physics.

Alec Douglas, Lin Su, Michal Szurek, Robin Groth, Sandra Brandstetter, Ognjen Markovic, Oriol Rubies-Bigorda, Stefan Ost (…)2026-04-14
🔬 atomic physics

Generalized spheroidal wave equation for real and complex valued parameters. An algorithm based on the analytic derivatives for the eigenvalues

This paper introduces a new algorithm utilizing analytical derivatives within the method of continued fractions to accurately compute eigenvalues for generalized spheroidal wave equations with real and complex parameters, demonstrating its efficacy through applications to quasimolecular systems like H2+\rm{H}_2^{+}, HeH2+\rm{HeH}^{2+}, and BH5+\rm{BH}^{5+}.

Mykhaylo V. Khoma2026-04-13
🔬 atomic physics

Immiscible to miscible quenching instabilities in two-dimensional binary Bose-Einstein condensates

This paper investigates immiscible-to-miscible quenching instabilities in two-dimensional binary Bose-Einstein condensates of rubidium isotopes, revealing that the transition dynamics are driven by vortex production and sound waves, exhibit a bottleneck effect deviating from classical Kolmogorov turbulence scaling, and ultimately stabilize into a linear relationship between the miscibility parameter and the initial configuration.

Lauro Tomio, S. Sabari, Arnaldo Gammal, R. K. Kumar2026-04-13
🔬 atomic physics

Characterization of rf field-induced a.c. Zeeman shift in multi-level highly charged ions

This paper experimentally characterizes the trap radio-frequency-induced a.c. Zeeman shift in highly charged Ca14+\mathrm{Ca}^{14+} ions using quantum logic spectroscopy with a co-trapped Be+\mathrm{Be}^{+} ion, confirming the shift's negligible impact on optical clock accuracy while demonstrating techniques applicable to other multi-level atomic systems.

Shuying Chen, Lukas J. Spieß, Alexander Wilzewski, Malte Wehrheim, José R. Crespo López-Urrutia, Piet O. Schmidt2026-04-13