566 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 proposes a generalized multi-level atomic model that accounts for branching spontaneous decay, enabling detection and exclusion of decayed atoms to achieve fundamental stability improvements of up to 4.5 dB over traditional two-level models, with an even greater 5.4 dB enhancement for odd parity Bell states, specifically applied to trapped-ion optical clocks like .
This paper demonstrates that electron photodesorption induced by ultraviolet light effectively mitigates residual electric field noise caused by surface-bound electrons in compact quartz vacuum cells, thereby enabling coherent single-photon Rydberg excitation of trapped atoms and enhancing the performance of quantum technologies.
This paper introduces "Energy Time Ptychography," a novel one-dimensional phase retrieval method that utilizes multiple energetically overlapping nuclear forward scattering measurements of synchrotron X-ray pulses to simultaneously reconstruct transmission spectra and scattering phases, thereby overcoming the bandwidth limitations of traditional gamma-ray sources.
This paper demonstrates that efficient lambda-enhanced gray molasses cooling can be achieved in a non-standard beam geometry using a cost-effective, EIT-based frequency-locking scheme with independent lasers, thereby eliminating the need for expensive GHz electronics while maintaining sufficient coherence for effective cooling.
This paper employs an extended stochastic variational method combined with complex scaling to compute the bound and resonant states of various muonic few-body Coulomb systems with high precision, successfully resolving previously unknown shallow resonances in three- and four-body sectors.
This study demonstrates that the pronounced saturable absorption observed in NV-doped diamond under femtosecond laser excitation arises not solely from nitrogen vacancy centers but from the combined nonlinear response of both NV centers and coexisting H2 defect complexes, highlighting the critical influence of the complex defect landscape on the material's nonlinear optical properties.
This paper proposes that the limited validity of standard nucleon-nucleon effective field theories arises from nonanalytic structures in the complex momentum plane, and demonstrates that introducing dimer fields to account for these singularities yields a meromorphic -matrix that enables accurate, cutoff-insensitive descriptions of low-energy scattering up to the pion production threshold.
This paper demonstrates that the coherent electromagnetic fields generated by periodically modulated relativistic electron micro-bunches in Free Electron Lasers create a novel interaction mechanism with atoms, offering new opportunities for probing atomic dynamics on femtosecond time scales.
This paper reports high-resolution Doppler-free laser-induced fluorescence spectroscopy of the transition in MgF, resolving 47 hyperfine components to extract precise spectroscopic constants that reveal subtle vibrational state differences and provide critical benchmarks for optimizing optical cycling schemes in magneto-optical trapping.
This paper revisits Majorana's method of converting the second-order Thomas-Fermi equation into a first-order one, applying it to both neutral and weakly ionized atoms to efficiently recalculate and validate key atomic physics quantities against previous numerical results.