Heisenberg choice of the observables and different outcomes
96823
How do we know a quantum state isn't just an unknown classical state?
148753
Quantum Stat-Mech Proof of an Inequality for the Partition Function
26417
Why do we use Hermitian operators in QM?
79757
Why does the density matrix $\rho$ obey a wrong-signed Heisenberg equation of motion?
46450
Physical meaning of quantum operators
94896
Deriving a QM expectation value for a square of momentum $\langle p^2 \rangle$
29174
Trouble with operator-sum representation of a quantum operation
123844
conditional expectation: an implication
84649
Why is the application of probability in QM fundamentally different from application of probability in other areas?
152437
Wavefunction, probability and impossible events
31473
Can the Heisenberg Uncertainty Principle be explained intuitively?
50089
characterization of the existence of higher order expectation.
154772
The Momentum Operator in QM
10856
Differences between pure/mixed/entangled/separable/superposed states
117387
Can we safely assume $\Psi(x,t) = \psi(x)e^{-i\omega t}$ always in QM?
22748
Factor 2 in Heisenberg Uncertainty Principle: Which formula is correct?
14166
Hilbert space of harmonic oscillator: Countable vs uncountable?