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.
This paper experimentally demonstrates high-fidelity, hyperfine-level-selective measurements of individual neutral cesium atoms by combining simultaneous laser cooling on a forbidden transition with background-free imaging, achieving a detection fidelity of 0.9993 while enabling repeated, low-loss state measurements.
This paper derives non-relativistic atomic potentials and identifies specific observables, such as energy shifts and various multipole moments, that are sensitive to couplings with hypothetical cosmic fields from light bosons predicted by extensions to the Standard Model.
This paper reports the experimental realization of a matter-wave Fabry-Pérot cavity in the ultrastrong driving regime, where a periodically translated light barrier induces curved-spacetime-like dynamics in a quasi-relativistic matter wave, successfully observing predicted fixed-point trajectories and demonstrating tunable stability through waveform modulation.
This paper analyzes how XUV-driven electron-hole dynamics combined with IR fields extend the high-order harmonic cutoff beyond standard limits, revealing that the resulting spectral properties and signal intensity are highly sensitive to pulse coherence and relative delays, which can lead to macroscopic signal suppression due to decoherence.
This paper proposes a bound-state-free shielding method using combined static and microwave electric fields to suppress collisional losses in strongly dipolar ultracold molecules, enabling the creation of large, long-lived degenerate gases with tunable interactions while avoiding the photon-changing collisions that limit previous microwave-only approaches.
This study utilizes femtosecond x-ray spectroscopy and a quantum-mechanical model to observe and reconstruct the coherent vibrational dynamics of the methyl radical's umbrella mode, which is launched by the photodissociation of methyl iodide and characterized by pronounced quantum beating due to strong negative anharmonicity.
This paper presents a novel adiabatic framework demonstrating that tunneling ionization combined with strong-field excitation can significantly enhance ionic excited state population and coherence, offering new avenues for controlling ultrafast electronic dynamics and applications in strong-field chemistry and lasing.
This paper presents a toolkit for loading spatially large optical tweezer arrays by sweeping the cooling light frequency to move a strontium-88 atomic reservoir, enabling the creation of arrays over 100 μm tall with controlled atom distributions and low temperatures.
This paper derives finite nonrecoil relativistic correction operators of order for hydrogen-like atoms and ions within two- and three-body formalisms beyond the adiabatic approximation, while analyzing the associated singular operators and discussing various regularization methods.
This paper proposes a tri-frequency laser scheme with dynamic detuning control for double Bragg diffraction atom interferometers, demonstrating that a hybrid protocol combining detuning sweeps with optimal control theory achieves over 95% contrast under realistic conditions, thereby enabling high-precision quantum sensing.