Quantum computing and simulations are creating transformative opportunities by exploiting
the principles of quantum mechanics in new ways to generate and process information. It is …

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 …

Antimatter was first predicted in 1931, by Dirac. Work with high-energy antiparticles is now
commonplace, and anti-electrons are used regularly in the medical technique of positron …

Atoms made of a particle and an antiparticle are unstable, usually surviving less than a
microsecond. Antihydrogen, made entirely of antiparticles, is believed to be stable, and it is …

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 …

The hydrogen atom is one of the most important and influential model systems in modern
physics. Attempts to understand its spectrum are inextricably linked to the early history and …

Antimatter continues to intrigue physicists because of its apparent absence in the
observable Universe. Current theory requires that matter and antimatter appeared in equal …

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 …

Utilizing the two-center convergent close-coupling method, we find a several order of
magnitude enhancement in the formation of antihydrogen via antiproton scattering with …

We demonstrate controllable excitation of the center-of-mass longitudinal motion of a
thermal antiproton plasma using a swept-frequency autoresonant drive. When the plasma is …