“Positronium is the simplest atom composed of equal-mass constituents, and until it self-annihilates, it behaves as a neutral ...

One of the discoveries that fundamentally distinguished the emerging field of quantum physics from classical physics was the ...

A new theory suggests gravity could possibly be the result of entropy—which would mean everything in the universe would fall ...

A new unified theory connects two fundamental domains of modern quantum physics: It joins two opposite views of how a single ...

Einstein’s claim that the speed of light is constant has survived more than a century of scrutiny—but scientists are still ...

Scientists developed a theory linking mobile and static behaviors of a particle in a Fermi sea, explaining quasiparticles and ...

Now, two unrelated-but-similar experiments confirm that, in a double-slit experiment, detection of a photon’s path (its ...