It’s time we talked about loop quantum gravity. What exactly is it? What are the loops? And can it really defeat string theory in our quest for a Theory of Everything? PBS Space Time is ...

Let’s talk about quantum gravity experiments that can be done here on Earth! If we discover how to connect quantum mechanics with general relativity we’ll pretty much win physics. There are ...

Quantum mechanics tells us that the forces of nature come in discrete, tiny chunks. Gravity, the bending of space-time, is a force. So is space-time quantized as well?

In the world of quantum mechanics, it’s no big deal for particles to be in multiple different states at the same time, or to teleport between locations, or to influence each other faster than light.

(via PBS Space Time) The holy grail of theoretical physics is to come up with a quantum theory of gravity. But after a century of trying we really have no idea how close we are, or it it's even ...

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

Quantum gravity is an attempt to unite the incompatible worlds of quantum mechanics and gravity. We explore it in more detail here.

A novel theory of 'wavy space-time' suggests that the division between our best descriptions of the universe on its smallest and largest scales may be because gravity does not play by quantum rules.

Illustration of the theory used to model quantum gravity: The lattice simulates a curved space-time – near the boundary, the lattice is denser due to the curvature.

In quantum gravity we expect that space-time will fluctuate wildly even in the absence of matter. In the quantum world, the vacuum never rests, and neither do space and time.

Physics How we could discover quantum gravity without rebuilding space-time In the search for a theory that unites general relativity and quantum physics, many have tried to rethink space-time.