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Apr
12
asked Diagonalization of Hamiltonian
Mar
11
comment Difference between RPA and generalized RPA
@Adam I am interested in using RPA to compute correlation functions in general. Which diagrams should be summed? How is it different in generalized RPA?
Mar
11
comment Bogoliubov transformation with a slight twist
I would add that the diagonalization is always possible because the matrix is Hermitian.
Feb
28
awarded  Yearling
Feb
27
asked Difference between RPA and generalized RPA
Jan
23
awarded  Popular Question
Dec
9
reviewed No Action Needed How long does it take to scan a typical scanning electron microscope image?
Nov
29
comment Is there a way for an astronaut to rotate?
related: physics.stackexchange.com/q/28011
Nov
28
revised Azimuthal quantum number,l and magnetic quantum number,m are from angular momentum?
improved formatting
Nov
28
suggested suggested edit on Azimuthal quantum number,l and magnetic quantum number,m are from angular momentum?
Nov
25
answered Does changing the electric / magnetic field cause self-reinforcing induction of the other?
Nov
21
revised Some conceptual questions in BEC
retagged .
Nov
21
suggested suggested edit on Some conceptual questions in BEC
Nov
20
comment Eigenvectors of the angular momentum operator $S_x$
An eigenvector $(a,b)$ represents a state that has a probability of $|a|^2$ being spin up, and a probability of $|b|^2$ being spin down. For the probabilities to sum to one, the eigenvector must be normalized.
Nov
20
comment Interpreting a Hamiltonian in terms of 'hopping' operators
What are $a$, $b$, and $\tau$?
Nov
7
revised Is $\langle\psi_1|p\psi_1\rangle$ necessarily 0 for eigenstates?
fix grammar
Nov
7
suggested suggested edit on Is $\langle\psi_1|p\psi_1\rangle$ necessarily 0 for eigenstates?
Oct
18
awarded  Popular Question
Oct
9
revised A naive question on the $U(1)$ gauge transformation of electromagnetic field?
fixed latex
Oct
9
suggested suggested edit on A naive question on the $U(1)$ gauge transformation of electromagnetic field?