physics.atom-ph papers | Gist.Science

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.

Classical and quantum beam dynamics simulation of the RF photoinjector test bench

This paper presents classical and quantum simulations of an S-band RF photoinjector at the Joint Institute for Nuclear Research, demonstrating that the system can produce high-quality electron beams with low emittance and effectively preserve the orbital angular momentum of Laguerre-Gaussian wave packets during multi-MeV acceleration, thereby validating its suitability for future studies of relativistic vortex electrons.

A. S. Dyatlov, V. V. Kobets, A. E. Levichev, M. V. Maksimov, D. A. Nikiforov, M. A. Nozdrin, K. Popov, K. A. Sibiryakova, K. E. Yunenko, D. V. Karlovets2026-02-17🔬 physics.atom-ph

Direct Measurement of the $5s5p\,{}^1P_1 \to 5s4d\,{}^1D_2$ Decay Rate in Strontium

This paper reports the first direct experimental determination of the branching ratio and decay rate for specific transitions in neutral strontium, revealing values that significantly deviate from established theoretical predictions and providing a crucial benchmark for modeling loss processes in laser cooling and single-atom fluorescence detection.

Naohiro Okamoto, Takatoshi Aoki, Yoshio Torii2026-02-17🔬 physics.atom-ph

Dual Magnetic and Electric Dipole Symmetry: Pseudo Angular Momentum in Parity Space and the Electric Landé $g$ -Factor

This paper establishes a symmetry-based framework analogous to the Zeeman effect that unifies magnetic and electric dipole interactions by introducing a pseudo-angular momentum derived from the Runge-Lenz vector and an electric Landé $g$ -factor, thereby describing induced electric dipole moments as arising from circulating magnetic probability currents.

Michael E. Tobar2026-02-17🔬 physics.atom-ph

Quasiperiodic nondipole ionization dynamics in the x-ray stabilization regime

This paper numerically demonstrates that strong-field ionization in the x-ray stabilization regime exhibits quasiperiodic modulation of ionization yield due to Coulomb-induced electron wave packet oscillations and reveals unusual photon momentum sharing, effects that are observable in upcoming x-ray free-electron laser facilities.

Aleksandr V. Boitsov, Karen Z. Hatsagortsyan, Christoph H. Keitel2026-02-17🔬 physics.atom-ph

Predicting the energies of Cf17+ for an optical clock

This paper presents highly accurate theoretical predictions for the 5f_5/2 - 6p_1/2 clock transition energy in Cf17+ using a relativistic coupled-cluster framework that incorporates iterative triple excitations and quantum-electrodynamic corrections, thereby enabling the experimental realization of a highly charged ion optical clock.

S. G. Porsev, M. S. Safronova2026-02-17🔬 physics.atom-ph

Vacuum Ultraviolet Dual-Comb Spectroscopy

This paper demonstrates the first vacuum ultraviolet dual-comb spectroscopy using intracavity high harmonic generation to achieve broadband, high-resolution, and absolutely accurate molecular absorbance measurements of acetylene and ammonia at 210 nm and 149 nm, respectively.

John J. McCauley, DylanP. Tooley, R. Jason Jones2026-02-17🔬 physics.atom-ph

Optical transport of cold atoms to quantum degeneracy

This paper demonstrates the efficient rapid optical transport of a cold ytterbium gas over 34 cm using a moving Bessel beam lattice, successfully preserving a significant fraction of atoms to achieve Bose-Einstein condensation and enabling fast preparation for large-scale quantum applications.

Yanqing Tao, Yufei Wang, Ligeng Yu, Bo Song2026-02-17🔬 physics.atom-ph

Design of Robust Raman Pulses for Cold Atom Interferometers Based on the Krotov Algorithm

This paper proposes and numerically validates a method using the Krotov quantum optimal control algorithm to design robust Raman pulses that significantly enhance the fidelity and fringe contrast of cold-atom interferometers by mitigating the effects of laser frequency detunings and intensity fluctuations.

Ziwen Song2026-02-17🔬 physics.atom-ph

Sub-part-per-trillion test of the Standard Model with atomic hydrogen

This paper presents a sub-part-per-trillion precision measurement of the 2S-6P transition in atomic hydrogen that resolves discrepancies in the proton charge radius by confirming the muonic hydrogen value and validates the Standard Model and bound-state QED corrections to unprecedented levels of accuracy.

Lothar Maisenbacher, Vitaly Wirthl, Arthur Matveev, Alexey Grinin, Randolf Pohl, Theodor W. Hänsch, Thomas Udem2026-02-17🔬 physics.atom-ph

Multielectron ionization in O $_2^+$ driven by intense infrared laser pulses

This paper extends a three-dimensional semiclassical model to investigate multielectron ionization and frustrated ionization in O $_2^+$ driven by intense infrared laser pulses, successfully explaining the kinetic energy features of ion fragments and the underlying mechanisms of frustrated triple ionization by incorporating full Coulomb interactions and simultaneous electron-nuclear motion.

Georgios Petros Katsoulis, Agapi Emmanouilidou2026-02-17🔬 physics.atom-ph

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