Trying to solve quantum gravity is frustrating. We have made tremendous progress in quantum theory, but it seems that every ...

Theories of quantum mechanics predict that some particles can exist in superpositions, which essentially means that they can ...

Quantum mechanics is both the most powerful theory physicists have ever devised and the most baffling. On the one hand, countless experiments have confirmed its predictions; the theory undergirds ...

The implications of quantum mechanics suggest reality isn't as solid as we think it is, but physicist David Bohm had a spin on the theory that restores reality. Columnist Karmela Padavic-Callaghan exp ...

Sorta sparked by this comment someone made to me but it's similar to what other people have told me before: I was listening to a lecture on quantum electrodynamics and it helped me conceptualize the ...

At the smallest scales of nature, the rules of the world shift in ways that can feel unsettling and beautiful at the same time. Matter no longer behaves like solid objects moving along clear paths.

For the first time, physicists have watched a beam of positronium, a short‑lived atom made of an electron and its antimatter twin, behave like a rippling quantum wave instead of a stream of tiny ...