728 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 study demonstrates the breakdown of the widely used isotropic asymptotic approximation in two-colour photoionisation by employing a self-referencing approach with non-consecutive extreme ultraviolet harmonics, revealing significant deviations between theoretical predictions and experimental measurements of Wigner delays.
This paper investigates the non-adiabatic quantum dynamics of ultralong-range high- Rydberg molecules using a vibronically coupled two-channel model, revealing that -dependent coupling between trilobite and butterfly states can induce non-adiabatic stabilization and multi-well tunneling effects that enhance molecular lifetimes and dynamical complexity.
This theoretical work demonstrates that applying optimal control theory to Bragg diffraction protocols significantly minimizes intrinsic multi-path diffraction phase shifts in high-order Mach-Zehnder atom interferometers, reducing systematic errors to the microradian level even for finite-temperature wavepackets.
This paper investigates how the relative phase of a final superposition state in four-level stimulated Raman adiabatic passage (STIRAP) is controlled by the amplitude, width, and timing of the transfer pulses, with implications for experiments measuring symmetry violation in atomic and molecular systems.
This paper details the theory of double microwave shielding, a technique using two microwave fields to suppress inelastic collisions and three-body recombination while enabling flexible tuning of dipolar interactions, thereby facilitating the creation of Bose-Einstein condensates and advancing the study of many-body physics in ultracold polar molecules.
This paper demonstrates that combining optical homodyne and RF heterodyne detection techniques in a Rydberg atom-based sensor preserves sensitivity while achieving an 8 MHz bandwidth, enabling the effective reception of digital communication signals and revealing distinct performance characteristics between pure tone and modulated signal detection compared to conventional mixers.
This paper proposes a minimal model of frustrated hardcore bosons on a -flux ladder that generates exact quantum many-body scars, offering a cross-platform experimental realization in cold atom and Rydberg atom systems to benchmark coherence and explore nonergodic dynamics.
This paper introduces deterministic unitary protocols that approximate imaginary-time evolution for ground-state preparation using multi-copy registers and controlled-SWAP operations, analyzing trade-offs between circuit depth and width in tree versus "hedge" architectures while demonstrating the potential of mid-circuit post-selection and platform-specific implementations.
This paper employs valence perturbation theory to efficiently calculate high partial wave contributions and estimate truncation corrections, thereby improving the reliability of theoretical error assessments in high-accuracy calculations of polyvalent atoms.
This paper demonstrates that a radio-frequency-driven dissipative Rydberg gas of cesium atoms exhibits a tunable time-crystalline phase that, under heterodyne conditions, displays synchronization phenomena and generates a frequency comb, a behavior successfully modeled by both a four-level mean-field theory and a classical Van der Pol oscillator.