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.

Probing False Vacuum Decay and Bubble Nucleation in a Rydberg Atom Array

This paper demonstrates that a Rydberg atom array can simulate false vacuum decay and bubble nucleation, experimentally verifying the exponential dependence of decay rates on symmetry-breaking fields predicted by quantum field theory while revealing how minor deviations from metastability disrupt this universal scaling and enabling the study of resonant nucleation in discrete quantum systems.

Yu-Xin Chao, Peiyun Ge, Zhen-Xing Hua, Chen Jia, Xiao Wang, Xinhui Liang, Zongpei Yue, Rong Lu, Meng Khoon Tey, Xiao Wang, Li You2026-03-31🔬 physics.atom-ph

Constraining axion-like dark matter with a radio-frequency atomic magnetometer

Using a broadband radio-frequency 87Rb^{87}\mathrm{Rb} atomic magnetometer, researchers conducted a search for axion-like dark matter in the mass range of 2.40×10102.40\times10^{-10} to 2.11×109eV/c22.11\times10^{-9}\,\mathrm{eV}/c^{2}, finding no significant signals but establishing improved upper limits on ALP-proton couplings and complementary constraints on ALP-neutron and ALP-electron interactions.

A. Rigoulet, S. Nanos, I. K. Kominis, D. Antypas2026-03-31🔬 physics.atom-ph

Simulating cavity QED with spin-orbit coupled Bose-Einstein condensates revisited

This paper critically evaluates spin-orbit coupled Bose-Einstein condensates as analogues for cavity quantum electrodynamics, demonstrating that while they can faithfully simulate single-atom light-matter interactions like the quantum Rabi model, they fundamentally fail to reproduce the collective many-body entanglement effects characteristic of the Dicke model.

Muhammad S. Hasan, Karol Gietka2026-03-31🔬 physics.atom-ph

ΛΛ-Enhanced Gray Molasses Cooling of 85^{85}Rb Atoms in Tweezers Using the D2_2 Line

This paper demonstrates that implementing Λ\Lambda-enhanced gray molasses cooling on the D2_2 line of 85^{85}Rb atoms in optical tweezers achieves a record-low temperature of 4.0(2) μ\muK and extends hyperfine clock qubit coherence time by 1.5 times compared to standard polarization gradient cooling, a result validated by a semi-classical four-level numerical model.

Deon Janse van Rensburg, Rogier Venderbosch, Yuri van der Werf, Jesus del Pozo Mellado, Marijn Venderbosch, Rianne Lous, Edgar Vredenbregt, Servaas Kokkelmans2026-03-30🔬 physics.atom-ph

Third and fourth density and acoustic virial coefficients of neon from first-principles calculations

Using first-principles path-integral Monte Carlo calculations with highly accurate pair and nonadditive many-body potentials, this study determines the third and fourth density and acoustic virial coefficients of neon across a wide temperature range (10–5000 K) with uncertainties significantly smaller than existing experimental data.

Robert Hellmann, Giovanni Garberoglio2026-03-30🔬 physics.atom-ph

Structured-Light Magnetometry in a Coherently Controlled Atomic Medium

This paper presents a structured-light magnetometry technique that maps magneto-optical rotation onto the spatial displacement of a petal-shaped intensity pattern in a radially polarized Laguerre-Gaussian beam interacting with cold 87Rb^{87}\mathrm{Rb} atoms, thereby enabling direct, polarizer-free magnetic field sensing through topological spatial readout.

Parkhi Bhardwaj, Shubhrangshu Dasgupta2026-03-30🔬 physics.atom-ph