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 presents a custom-designed high-voltage generation system capable of producing eight stable, phase-offset sinusoidal waveforms with frequency sweeps to effectively decelerate heavy polar molecules in a traveling-wave Stark decelerator, overcoming significant capacitive coupling challenges to enable precision spectroscopy for fundamental physics tests.
This study experimentally demonstrates that matter-wave four-wave mixing in K Bose-Einstein condensates can be optimized by tuning atomic interactions via Feshbach resonances, revealing that the yield is maximized near the critical gas-droplet phase boundary in two-spin configurations.
This paper demonstrates that low-pressure alkali-metal vapor cells with resolved hyperfine manifolds can achieve high-performance magnetometry by employing a probe-assisted depopulation pumping scheme to achieve high polarization and sensitive detection, resulting in Earth's field and RF magnetometer sensitivities of 18 fT/ and 12 fT/, respectively.
The paper demonstrates that Lagrangians differing by a total derivative, while physically equivalent for closed systems, can lead to inequivalent reduced dynamics in open quantum systems, and uses this insight to resolve discrepancies in deriving the master equation for bremsstrahlung in QED.
This paper demonstrates a highly efficient and reversible optical-to-spin conversion process in using an atomic frequency comb memory, achieving up to 96% efficiency for a 500 s storage time by using a magnetic field to prevent Zeeman transition interference.
This paper develops and validates a series of analytic models to describe how recycled neutral atoms penetrate plasma and contribute to fueling, demonstrating that charge exchange can be simplified as a loss term to create a practical closed-form solution.
This paper demonstrates the practical utility of Rydberg atom-based sensors by successfully receiving and demodulating real-world frequency-modulated (FM) audio signals from a consumer-grade handheld UHF radio.
This paper presents a direct and quantitatively validated method for determining the atomic number density in MEMS-based alkali vapor cells using single-pass absorption spectroscopy (SPAS) and a density-matrix model that accounts for key broadening and optical pumping effects.
This paper describes a versatile, hardware-limited method for generating photons with arbitrary temporal waveforms from any single quantum emitter by deterministically modulating the amplitude and phase of an excitation field.
This paper reports the observation of suppressed charge-exchange rates in collisions between CaH molecular ions and K atoms in a hybrid trap, noting that current quantum-chemical models cannot fully account for the results and suggesting the need for more complex quantum treatments.