This article reviews recent developments in tests of fundamental physics using atoms and
molecules, including the subjects of parity violation, searches for permanent electric dipole …

A recent rejuvenation of experimental and theoretical interest in the physics of few-body
systems has provided deep, fundamental insights into a broad range of problems. Few-body …

This is the first rigorous, self-contained treatment of the theory of deep learning. Starting with
the foundations of the theory and building it up, this is essential reading for any scientists …

We have measured the 1 S–2 S transition frequency in atomic hydrogen via two-photon
spectroscopy on a 5.8 K atomic beam. We obtain f 1 S–2 S= 2 466 061 413 187 035 (10) Hz …

The photon—the quantum excitation of the electromagnetic field—is massless but carries
momentum. A photon can therefore exert a force on an object upon collision. Slowing the …

In recent years, there has been a wealth of new science involving low-energy antimatter (ie,
positrons and antiprotons) at energies ranging from 10 2 to less than 10-3 eV. Much of this …

The spectrum of the hydrogen atom has played a central part in fundamental physics over
the past 200 years. Historical examples of its importance include the wavelength …

The field of experimental positronium physics has advanced significantly in the last few
decades, with new areas of research driven by the development of techniques for trapping …

Physicists have long wondered whether the gravitational interactions between matter and
antimatter might be different from those between matter and itself. Although there are many …

We give an overview of the work done with the Laboratoire National de Metrologie et
d'Essais-Systemes de Reference Temps-Espace (LNE-SYRTE) fountain ensemble during …