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 …

Abstract The Antiproton Decelerator (AD) facility of CERN began operation in 1999 to serve
experiments for studies of CPT invariance by precision laser and microwave spectroscopy of …

We briefly summarize motivations for testing the weak equivalence principle and then review
recent torsion-balance results that compare the differential accelerations of beryllium …

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 …

Antihydrogen, a positron bound to an antiproton, is the simplest antiatom. Its counterpart—
hydrogen—is one of the most precisely investigated and best understood systems in physics …

Positrons (ie, antielectrons) find use in a wide variety of applications, and antiprotons are
required for the formation and study of antihydrogen. Available sources of these antiparticles …

This work describes the development of magnetic levitation (MagLev) using ring magnets
and a configuration (which we call “axial MagLev”) to remove the physical barriers to …

The ALPHA experiment has recently entered an expansion phase of its experimental
programme, driven in part by the expected benefits of conducting experiments in the …

The properties of antihydrogen are expected to be identical to those of hydrogen, and any
differences would constitute a profound challenge to the fundamental theories of physics …