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.
The paper introduces RydIQule, an open-source Python package that utilizes a graph-based paradigm to efficiently generate Hamiltonians and solve semi-classical Bloch equations for multi-level atomic systems, enabling rapid simulation of complex scenarios like Doppler-broadened Rydberg sensors on standard hardware.
This paper presents an analytical calculation of the complete correction to the energies of $nP$-levels in two-body systems with arbitrary masses and magnetic moments, revealing a previously overlooked correction for positronium and providing essential theoretical data for extracting nuclear charge radii in light muonic atoms.
This study demonstrates a scalable analog quantum simulation of the Dicke model using a two-dimensional crystal of approximately 100 trapped ions to experimentally observe key non-equilibrium phenomena, including dynamical phase transitions, chaotic dynamics, entanglement growth, and spin-phonon squeezing with revivals.
This paper derives exact closed-form expressions for spin wave functions under specific magnetic fields to enable controlled transitions for quantum computing and to facilitate precise measurements of nuclear moments in atoms and molecules, offering a solution to resolve inconsistencies in existing hyperfine data for isotopes like 133Cs.
This paper utilizes Finite Element Method (FEM) to analyze the mechanical and thermal stability of a 7.5 cm dual-axis cubic optical cavity, demonstrating its suitability as a robust, transportable reference for next-generation all-optical atomic clocks in terrestrial and space applications.
Using photoelectron-photoion coincidence momentum imaging in phase-locked intense laser fields, researchers demonstrated that electron recollisional excitation drives the dissociative ionization of OCS, evidenced by distinct energy-dependent asymmetry flips in electron emission for OCS and S channels that correspond to the parent ion's excitation energy.
This paper demonstrates that atoms arranged in chiral geometries can exhibit a strong collective chiroptical response mediated entirely by electric-dipole interactions at subwavelength separations, a phenomenon driven by the formation of subradiant collective modes.
This study utilizes archival GPS carrier phase data to conduct a retrospective search for exotic low-mass fields emitted by the GW170817 binary neutron star merger, finding no significant signal but establishing new 95% confidence-level constraints on the interaction energy scale of quadratic couplings that improve upon existing astrophysical limits.
This paper presents the design and performance of a cryogenic buffer gas beam source featuring an in-situ ablation target replacement system that maintains vacuum and cryogenic conditions, thereby achieving a 40% long-term yield improvement for the ACME III electron electric dipole moment search while producing cold thorium monoxide molecules with parameters comparable to traditional sources.
This paper highlights how the high-precision measurements of electron and muon magnetic moments serve as critical tests of the Standard Model and quantum field theory, with the electron offering the most stringent validation of current theories and the muon providing a sensitive probe for discovering new physics beyond the Standard Model.