Is the reason we haven't fully combined GR and QM purely mathematical (rather than conceptual or empirical)?
4597
A list of inconveniences between quantum mechanics and (general) relativity?
81157
Consequences of the new theorem in QM?
70281
Why does non-commutativity in quantum mechanics require us to use Hilbert spaces?
80934
Mathematical background for Quantum Mechanics
98811
Canonical everyday-life example of a technology that could not work without humans mastering QM in analogy to the application of GR in GPS?
45559
Why we use $L_2$ Space In QM?
119993
If quantum speed-up is due to the wave-like nature of quantum mechanics, why not just use regular waves?
26417
Why do we use Hermitian operators in QM?
107881
Is it possible that there is no theory of quantum gravity?
114672
Why do we use the Lagrangian and Hamiltonian instead of other related functions?
98455
Twin Paradox: Still a Paradox?
131965
Why can't a real scalar couple to the electromagnetic field?
7498
Differences in measurement between quantum physics and classical physics?
4095
How do we know that there isn't a classical solution to the measurement problem/Quantum Mechanical uncertainty?
134571
Why should a (physical) principle be applicable to different systems in different positions in space and time?
87423
Why can we treat quantum scattering problems as time-independent?
83983
Why don't we prove that functions used in physics are continuous and differentiable?