564 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 presents a method for calculating electric-field-dependent -factors in symmetric top molecules and applies it to RaOCH to identify -doublet levels with small -factor differences, which is crucial for enhancing electron electric dipole moment (eEDM) experiments via laser cooling.
This paper introduces a new class of geometrically constructed, error-correcting control pulses that enable ultra-fast, robust state transitions for co-located spin ensembles without frequency selectivity, achieving milliradian precision and paving the way for 30-fold improvements in next-generation tests of the standard model and nuclear-spin quantum memories.
Using a consistent quantum microscopic approach, this paper demonstrates that evanescent modes in waveguides can dominate collective polyatomic effects in atomic ensembles by significantly modifying dipole-dipole interactions, thereby altering cooperative spontaneous decay and radiation transfer.
This study uses ab initio R-matrix with time dependence calculations to demonstrate that high-order harmonic generation spectra in argon below the ionization threshold are not uniquely determined observables but depend critically on spectral windowing and post-pulse propagation analysis choices, necessitating explicit parameter specification for meaningful comparison with experiments.
This paper establishes a fundamental relationship expressing the chemical potential of photoluminescence as a function of temperature and material properties, enabling a Planck-like analysis of its spectral, entropic, and statistical evolution from pump-induced to thermal emission while identifying a quasi-conserved emission regime and providing a framework for designing temperature-tunable light sources.
This paper demonstrates that optical ion clocks can probe quantum signatures of proper time, including vacuum-induced and squeezing-related second-order Doppler shifts and motion-clock entanglement, thereby enabling experiments where a quantum description of relativistic time evolution becomes necessary beyond classical dynamics.
This paper presents a comprehensive theoretical framework combining multichannel quantum-defect theory, matrix diagonalization, and angular-momentum frame transformations to calculate and analyze the fine and hyperfine structures of high- Rydberg-Stark manifolds in H and D, revealing that while hyperfine interactions primarily induce uniform Fermi-contact splitting, molecular rotation coupled with spin-rotation and core-polarization interactions leads to significant, state-specific Stark splittings.
This paper demonstrates that periodic modulation of electron spin polarization in an alkali-noble-gas comagnetometer enables continuous tuning and suppression of Fermi-contact spin-spin interactions via Floquet engineering, offering a general mechanism for controlling interactions in hybrid atomic systems for precision measurements and quantum memories.
This paper presents a spatially resolved, self-calibrating method for imaging millimeter-wave electric fields in warm atomic vapor by utilizing Rydberg-state fluorescence with zero background and Autler-Townes splitting analysis based on the GKSL master equation to visualize interference patterns and engineered field distributions.