630 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 a re-evaluation of the strontium transition frequency to by employing two consistent measurement methods—fluorescence spectroscopy and slow atomic beam velocity analysis—within a compact ultra-high vacuum setup utilizing a diffraction grating chip as an optical element.
This paper demonstrates a non-destructive, time-resolved atom thermometry technique by analyzing the interference between a single Rb atom's resonance fluorescence and a coherent beam, achieving 4% temperature uncertainty at with 200 s resolution.
This paper proposes a resource-efficient quantum-selected configuration interaction framework that constructs a compact Hamiltonian to significantly reduce circuit complexity, enabling accurate calculations of molecular properties like ground-state energies and dipole moments for Group IIIA monofluorides on noisy intermediate-scale quantum devices with up to 20 qubits.
This paper investigates on-site interaction energies for shielded ultracold polar molecules in optical lattices, revealing a unique phenomenon where the interaction strength transitions from negative to positive as lattice depth increases due to strong correlations from a repulsive core, thereby enabling new regimes of dipolar Hubbard physics with multiple site occupancy.
This paper demonstrates a super-resolved frequency measurement platform using a mode-selective atomic Raman quantum memory in warm caesium vapour that achieves a 34-fold precision enhancement over direct intensity measurements by coherently storing and retrieving optimal temporal modes with high fidelity.
This paper introduces a new, highly accurate, and compact Gaussian basis set with a specific optimization protocol for describing lithium Rydberg states up to , which achieves superior excitation energy accuracy compared to universal basis sets while enabling routine *ab initio* investigations of Rydberg states in more complex systems.
This paper proposes that parity-violating weak interactions, which typically induce negligible energy differences between chiral systems, can be dramatically amplified during phase transitions by a factor proportional to the critical nucleus size (), offering a mechanism to measure experimentally and potentially explaining the cosmological matter-antimatter asymmetry.
This paper presents a minimal analytical extension of the Chihara decomposition for X-ray Thomson scattering that incorporates exact bound-free and bound-bound transitions to satisfy the Bethe -sum rule, demonstrating that the standard impulse approximation fails to meet fundamental theoretical constraints and yields experimentally detectable deviations.
This paper introduces the HIR software package, a collisional-radiative model for calculating hydrogen ionization in hot plasmas with anisotropic fast ions, demonstrating that stepwise ionization significantly impacts total rates and mean free paths while revealing that fast ion anisotropy has a negligible effect on ionization dynamics.
This paper proposes a method to utilize strong ro-vibrational van der Waals interactions between ultracold polar molecules to suppress collisional losses and enable evaporative cooling of Fermi mixtures without external field shielding, thereby facilitating advanced applications in quantum simulation, synthetic dimensions, and lattice stabilization.