A new theory suggests that the unification between quantum physics and general relativity has eluded scientists for 100 years because huge "fluctuations" in space and time mean that gravity won't ...

Textbooks give strange, imprecise explanations of where things happen in quantum mechanics. Consistency with gravity needs a fresh approach.

Now many amplitude researchers hope a reformulation of quantum physics will set the stage for the next physics revolution, a theory of quantum gravity and the origin of space-time.

Today’s revolution offers the potential for yet another rewrite of space-time’s résumé, with the bonus of perhaps explaining why quantum mechanics seems so weird.

Exploring the BTZ black hole in (2+1)-dimensional gravity took me down a fascinating rabbit hole, connecting ideas I never expected—like black holes and topological phases in quantum matter ...

Bizarre quantum bonds connect distinct moments in time, suggesting that quantum links—not space-time—constitute the fundamental structure of the universe.

Proposed experiments will search for signs that spacetime is quantum and can exist in a superposition of multiple shapes at once ...

Space and time are continuous. Perhaps every "problem" we associate with gravity today is simply an artifact of not having a complete theory of the quantum Universe.

Many physicists believe that entanglement is the essence of quantum weirdness — and some now suspect that it may also be the essence of space-time geometry.

Whereas quantum physics treats space and time as immutable, general relativity warps them for breakfast. Somehow a theory of quantum gravity would need to reconcile these ideas about space and time.

This year ushered in several new advances in quantum physics, from the demonstration of time crystals to the discovery of a possible quarksplosion.