Why should the energy (of an eigenstate) be greater than the lowest point of the potential?
44817
Lower bound on energy is potential minimum
141376
Why the dipole interaction term in the Hamiltonian has all diagonal elements to be zero in the energy eigenbasis?
100870
In De Broglie's Explanation for Bohr's Quantization Condition, why do we not use 2πr = n λ/2, why do we use 2πr = n λ?
112563
Approximate the second largest eigenvalue (and corresponding eigenvector) given the largest
14989
In quantum mechanics, given certain energy spectrum can one generate the corresponding potential?
82418
Why not drop $\hbar\omega/2$ from the quantum harmonic oscillator energy?
69764
Potential inside a polarized sphere
155640
Why is the laboratory frame energy always greater than the center of mass frame energy?
121197
Eigenvalues and eigenfunctions of the exponential potential $ V(x)=\exp(|x|) $
77318
Why do we consider potential energy function $U(x)$ differentiable?
4426
Why can the entropy of an isolated system increase?
24172
Why does heat added to a system at a lower temperature cause higher entropy increase?
90716
Conservation of energy and wavefunctions
157297
Should the eigenkets be weighted in $|P\rangle = \sum\limits_{r}|\xi^r\rangle$?
45625
Is energy content of a system different depending on the observer?
136678
$\hbar \rightarrow 0$ in quantum mechanics
56266
Potential energy and the work energy theorem