Dressing effects in laser-assisted (e,2e) process in fast electron-hydrogen atom collisions in an asymmetric coplanar scattering geometryWe present the theoretical treatment of laser-assisted (e,2e) ionizing collisions in hydrogen for fast electrons, in the framework of the first-order Born approximation at moderate laser…Gabriela Buică·Jun 14, 2023SaveLearn
Symmetries in elastic scattering of electrons by hydrogen atoms in a two-color bicircular laser fieldWe consider the elastic scattering of electrons by hydrogen atoms in the presence of a two-color circularly polarized laser field in the domain of moderate intensities below 1013 W/cm2 and…Gabriela Buica·Jun 14, 2023SaveLearn
Polarization dependence in inelastic scattering of electrons by hydrogen atoms in a circularly polarized laser fieldWe theoretically study the influence of laser polarization in inelastic scattering of electrons by hydrogen atoms in the presence of a circularly polarized laser field in the domain of field…Gabriela Buică·Jun 14, 2023SaveLearn
Non-Lorentzian atomic natural line-shape of core level multiplets: Access high energy x-ray photons in electron capture nuclear decayWe present a method to calculate the natural line width and energy dependent line shape due to fluorescence decay of core excited atoms within a full relativistic multi-reference configuration…Marc Merstorf, Martin Braß, Maurits W. Haverkort·Jun 14, 2023SaveLearn
Role of negative-energy states on the E2-M1 polarizability of optical clocksThe theoretical calculations of the dynamic E2-M1 polarizability at the magic wavelength of the Sr optical clock are inconsistent with experimental results. We investigate role of negative-energy…Fang-Fei Wu, Ting-Yun Shi, Wei-Tou Ni et al.·Jun 14, 2023SaveLearn
Combined two-loop self-energy corrections at finite and zero temperaturesIn this paper we investigate higher-order corrections to the energies of bound states in hydrogen subjected to the external blackbody radiation field. In particular, within the framework of thermal…T. Zalialiutdinov, D. Solovyev·Jun 13, 2023SaveLearn
Improved Measurements of Muonic Helium Ground-State Hyperfine Structure at a Near-Zero Magnetic FieldMuonic helium atom hyperfine structure (HFS) measurements are a sensitive tool to test the three-body atomic system and bound-state quantum electrodynamics theory, and determine fundamental constants…P. Strasser, S. Fukumura, R. Iwai et al.·Jun 13, 2023SaveLearn
Extended rotational coherence of polar molecules in an elliptically polarized trapWe demonstrate long rotational coherence of individual polar molecules in the motional ground state of an optical trap. In the present, previously unexplored regime, the rotational eigenstates of…Annie J. Park, Lewis R. B. Picard, Gabriel E. Patenotte et al.·Jun 12, 2023SaveLearn
Calculation of isotope shifts and King plot nonlinearities in Ca+Many-body perturbation theory is implemented in order to calculate the isotope shifts of 4s, 4p1/2, 4p3/2, 3d3/2, and 3d5/2 energy levels of Ca+, for even isotopes A=40,…Anna V. Viatkina, Vladimir A. Yerokhin, Andrey Surzhykov·Jun 12, 2023SaveLearn
Heat transport in a Coulomb ion crystal with a topological defectThe thermodynamics of low-dimensional systems departs significantly from phenomenologically deducted macroscopic laws. Particular examples, not yet fully understood, are provided by the breakdown of…L. Timm, H. Weimer, L. Santos et al.·Jun 9, 2023SaveLearn
Ultracold molecular collisions in magnetic fields: Efficient incorporation of hyperfine structure in the total rotational angular momentum representationThe effects of hyperfine structure on ultracold molecular collisions in external fields are largely unexplored due to major computational challenges associated with rapidly proliferating hyperfine…Timur V. Tscherbul, Jose P. D'Incao·Jun 8, 2023SaveLearn
Emergence of synchronisation in a driven-dissipative hot Rydberg vaporWe observe synchronisation in a thermal (35-60 C) atomic (Rb) ensemble driven to a highly-excited Rydberg state (principle quantum number n ranging from 43 to 79). Synchronisation in this…Karen Wadenpfuhl, C. Stuart Adams·Jun 8, 2023SaveLearn
Extraction of XUV+IR ionization amplitudes from the circular dichroic phaseA strong helicity dependence of reconstruction of attosecond bursts by beating of two-photon transitions (RABBITT) with circularly polarized XUV and IR pulses was reported by Han et al. [Nature…Anatoli Kheifets·Jun 8, 2023SaveLearn
On the 11+u electronic state in strontium dimerThe laser technique of polarisation labelling of levels has been used to study the excited 11+u state of 88Sr2, in most part heavily perturbed by the neighbouring…Jacek Szczepkowski, Wlodzimierz Jastrzebski, Anna Grochola et al.·Jun 7, 2023SaveLearn
The space cold atom interferometer for testing the equivalence principle in the China Space StationThe precision of the weak equivalence principle (WEP) test using atom interferometers (AIs) is expected to be extremely high in microgravity environment. The microgravity scientific laboratory…Meng He, Xi Chen, Jie Fang et al.·Jun 7, 2023SaveLearn
Calculations of the binding-energy differences for highly-charged Ho and Dy ionsThe binding-energy differences for 163Hoq+ and 163Dyq+ ions with ionization degrees q = 38, 39, and 40 are calculated. The calculations are performed using the…I. M. Savelyev, M. Y. Kaygorodov, Y. S. Kozhedub et al.·Jun 5, 2023SaveLearn
Second-scale rotational coherence and dipolar interactions in a gas of ultracold polar moleculesUltracold polar molecules uniquely combine a rich structure of long-lived internal states with access to controllable long-range, anisotropic dipole-dipole interactions. In particular, the rotational…Philip D. Gregory, Luke M. Fernley, Albert Li Tao et al.·Jun 5, 2023SaveLearn
Super- and subradiance in dilute disordered cold atomic samples: observations and interpretationsWhen a photon is sent onto an atomic ensemble, it interacts collectively with the N atoms of the sample and not simply with one of them. This results in measurable modifications in the scattering…William Guerin·Jun 5, 2023SaveLearn
Systematic errors arising from polarization imperfections in measurements of the electron's electric dipole momentThe electron's electric dipole moment (eEDM) can be determined by polarizing the spin of an atom or a molecule and then measuring the spin precession frequency in an applied electric field. Radiation…C. J. Ho, S. C. Wright, B. E. Sauer et al.·Jun 5, 2023SaveLearn
Raman Sideband Cooling of Molecules in an Optical Tweezer ArrayUltracold molecules, because of their rich internal structures and interactions, have been proposed as a promising platform for quantum science and precision measurement. Direct laser-cooling…Yukai Lu, Samuel J. Li, Connor M. Holland et al.·Jun 4, 2023SaveLearn
The alpha and helion particle charge radius difference from spectroscopy of quantum-degenerate heliumAccurate spectroscopic measurements of calculable systems provide a powerful method for testing the Standard Model and extracting fundamental constants. Recently, spectroscopic measurements of finite…Y. van der Werf, K. Steinebach, R. Jannin et al.·Jun 4, 2023SaveLearn
ASTRA: a Transition-Density-Matrix Approach to Molecular IonizationWe describe (AttoSecond TRAnsitions), a new close-coupling approach to molecular ionization that uses many-body transition density matrices between ionic states with arbitrary spin and…Juan Martín Randazzo, Carlos Marante, Siddhartha Chattopadhyay et al.·Jun 2, 2023SaveLearn
Cold highly charged ions in a radio-frequency trap with superconducting magnetic shieldingWe implement sympathetic cooling of highly charged ions (HCI) by fully enclosing a linear Paul trap within a superconducting radio-frequency resonator. A quantization magnetic field applied while…Elwin A. Dijck, Christian Warnecke, Malte Wehrheim et al.·Jun 2, 2023SaveLearn
Robust and scalable rf spectroscopy in first-order magnetic sensitive states at second-long coherence timeTrapped-ion quantum sensors have become highly sensitive tools for the search of physics beyond the Standard Model. Recently, stringent tests of local Lorentz-invariance (LLI) have been conducted…C. -H. Yeh, K. C. Grensemann, L. S. Dreissen et al.·Jun 2, 2023SaveLearn
Probing the limits of optical cycling in a predissociative diatomic moleculeMolecular predissociation is the spontaneous, nonradiative bond breaking process that can occur upon excitation. In the context of laser cooling, predissociation is an unwanted consequence of…Qi Sun, Claire E. Dickerson, Jinyu Dai et al.·Jun 1, 2023SaveLearn