query: Why is quantum mechanical momentum the derivative of the wave function with respect to the position?
positive_passages.docid: 154772
positive_passages.text: The Momentum Operator in QM
negative_passages.docid: 63304
negative_passages.text: The Dirac-delta function as an initial state for the quantum free particle
negative_passages.docid: 158610
negative_passages.text: Why is the differentiation of $e^x$ is $e^x$?
negative_passages.docid: 123911
negative_passages.text: Why is the derivative of a vector orthogonal to the vector itself?
negative_passages.docid: 89057
negative_passages.text: How does one properly define the derivative of one operator-valued function?
negative_passages.docid: 133424
negative_passages.text: Why do we make a distinction between derivatives and partial derivatives?
negative_passages.docid: 121574
negative_passages.text: Schrödinger equation derivation and Diffusion equation
negative_passages.docid: 14867
negative_passages.text: How to interpret $\langle x|\hat Q|x'\rangle$ for a quantum mechanical operator $\hat Q$?
negative_passages.docid: 65535
negative_passages.text: How is the Schroedinger equation a wave equation?
negative_passages.docid: 156879
negative_passages.text: "Reality" of EM waves vs. wavefunction of individual photons - why not treat the wave function as equally "Real"?
negative_passages.docid: 68523
negative_passages.text: Am I doing this right? Finding the time derivative of expectation value of momentum
negative_passages.docid: 157191
negative_passages.text: Conjugate Variables, Noether's Theorem and QM
negative_passages.docid: 111469
negative_passages.text: De Broglie wavelength, frequency and velocity - interpretation
negative_passages.docid: 132023
negative_passages.text: How to derive Schrödinger equation?
negative_passages.docid: 48756
negative_passages.text: Why are derivatives in interaction terms treated differently from derivatives in the kinetic term?
negative_passages.docid: 26417
negative_passages.text: Why do we use Hermitian operators in QM?
negative_passages.docid: 59657
negative_passages.text: On the nature of the collapse of the wave function