What qualifies as a quantum theory and why are we seeking a quantum theory of gravity?
48440
Quantum made easy: so what *is* quantum mechanics all about?
118945
How do I know how many classical limits (if any) a given quantum theory is going to have?
79157
Is gravity just electromagnetic attraction?
37742
What combinations of realism, non-locality, and contextuality are ruled out in quantum theory?
4095
How do we know that there isn't a classical solution to the measurement problem/Quantum Mechanical uncertainty?
43612
How can I read off the fact that gravity is associated with spin-2 particles from the Einstein-Hilbert action?
25806
Should multiverse theories be rebranded as meta physics?
46037
Can Loop Quantum Gravity connect in any way with string theory?
137061
Understanding the different kinds of mass in gravity
30765
Is anti-gravity (i.e. repulsive gravity) possible in theoretical physics?
109206
Why can't we use entanglement to defy Heisenberg's Uncertainty Principle?
110096
What's the standard "roadmap" to learning quantum physics?
50069
What is quantum entanglement?
144208
Does String theory say that spacetime is not fundamental but should be considered an emergent phenomenon?
21277
Why quantising gravity necessarily give us gravitons?
67261
How does a perturbation theory make sense in quantum field theory?
31369
To which extent is general relativity a gauge theory?