Positronium shouldn't last long enough to be interesting. It's an "atom" assembled from an electron and its antimatter twin — ...

Scientists have made the first experimental observation of matter wave diffraction in a short-lived electron-positron atom.

Scientists have demonstrated that atoms can exhibit wave-like behavior, challenging long-held assumptions that experiments of this nature were impossible and opening new doors in quantum physics. The ...

One of the defining breakthroughs that set quantum physics apart from classical physics was the realization that matter behaves very differently at ...