I'm very happy that quantum gravity doesn't work.
Quantum describes matter and gravity as we know from GR is just shape of the spacetime. It would be horrible if same math ruled two so different things.
Quantum describes matter and gravity as we know from GR is just shape of the spacetime. It would be horrible if same math ruled two so different things.
I don't think that's true. Quantum description of gravity that has any aspirations to describe real world doesn't even get the math solid with irreducible infinites popping up everywhere.
As they should.
I just don't think shape of the spacetime is something that should be possible to quantize. It's just fundamentally different for me and expectation that it should be ruled by similar equations as other forces seems misguided.
Same way GR is more precise description of ANOTHER part of classical physics that reduces to classical physics if you adjust some parameters.
There's really no reason that GR should share with quantum model much more math than the simplest mathematical operations.
Why unify GR with quantum and not for example fluid dynamics?
GR and quantum field theory for me just describe completely different parts of physics.
Sure it would be neat to know how world behaves when neither GR nor quantum is sufficient to predict what will happen but I just think it's way more likely that unified theory will be quantum model with relativistic terms not the quantum description of gravity.