593 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.
This paper reports the most precise determination of a bound-electron factor in a molecular ion to date through high-precision Penning-trap spectroscopy of HD, achieving agreement with advanced ab initio theory while revealing a moderate tension in scalar spin-spin interaction coefficients.
This paper demonstrates the optical trapping of CaOH molecules in -type parity-doublet states to achieve a bare qubit coherence time of 0.8(2) s, marking a significant milestone for polyatomic molecules in quantum science by identifying and characterizing parity-dependent trap shifts as the primary limiting factor.
This paper reports the experimental realization of fractional Fermi seas in an excited one-dimensional Bose gas, where stable states exhibiting Friedel oscillations confirm the existence of exotic quantum states with fractional momentum occupancies predicted by generalized exclusion statistics.
This paper presents a rigorous quantum analysis of cyclotron transitions in bound complex ions, demonstrating how coupling between collective and internal motions alters transition energies and oscillator strengths compared to bare ions, while deriving selection rules and quantitative methods for both positive and negative atomic and cluster ions.
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 paper demonstrates a robust method for Doppler-free optical spectroscopy by utilizing photon correlation measurements to observe interference between photons scattered from independent, counter-propagating warm atomic ensembles, where stable frequency differences enable periodic modulation of coincidence rates despite thermal motion.
This paper introduces the concept of a "temporal pulse origin" to parameterize the inertial phase response of atom interferometers, enabling the design of tailored, robust pulse sequences that minimize systematic errors, reduce sequence duration, and enhance scale factor stability against environmental fluctuations.
This paper introduces RydIQule Version 2, an updated Python software package that enhances the accurate modeling of real-world Rydberg atomic radio-frequency sensors by expanding upon the core physics capabilities established in its initial 2023 release.
This paper presents a theoretical model that integrates relativistic four-component wavefunctions with Hund's case (a) rotational Hamiltonians to calculate -splittings in diatomic molecules like PtH, ThF, and TaO, providing qualitative agreement with experiments and predicting a 9 kHz splitting for TaO that offers benefits for reducing systematic uncertainty in searches for new physics while posing potential depolarization challenges.