Why is quantising gravity so difficult?
4597
A list of inconveniences between quantum mechanics and (general) relativity?
40340
How general is the Lagrangian quantization approach to field theory?
106119
Why is there no permittivity-type constant for gravitation?
27986
Is the graviton hypothetical?
131965
Why can't a real scalar couple to the electromagnetic field?
17218
Open problems in General Relativity
59499
If gravity is a pseudoforce in general relativity, then why is a graviton necessary?
105323
Why can't gravitons be created in traditional particle accelerators?
64286
How can gravitions exist without violating GR?
147053
Gamma function still hard for me
42414
Why there is no unique "recipe" for quantization of a classical theory?
72898
Is "quantizing" a field different from "quantizing" a particle?
107881
Is it possible that there is no theory of quantum gravity?
18414
Energy-Momentum Tensor in QFT vs. GR
57051
Why does Quantum Field Theory use Lagrangians rather than Hamiltonians?
74582
How can blackbody radition be explained by quantization?
82418
Why not drop $\hbar\omega/2$ from the quantum harmonic oscillator energy?