Jian's user avatar
Jian's user avatar
Jian's user avatar
Jian
  • Member for 8 years, 10 months
  • Last seen more than a month ago
5 votes

What is canonical momentum?

4 votes

Why does holding something up cost energy while no work is being done?

3 votes
Accepted

Born-Oppenheimer approximation

3 votes
Accepted

Is the Bogoliubov quasiparticle boson or fermion?

3 votes

Vector spaces for the irreducible representations of the Lorentz Group

2 votes

Euler-Lagrange equations using $\vec{E}$ and $\vec{B}$ instead of $A^\mu$

2 votes

Peierls substitution vs minimal coupling

1 vote

Prove that if $\hat H | a_n\rangle=a_n|a_n\rangle$, then $f(\hat H)| a_n\rangle=f(a_n)|a_n\rangle$

1 vote

Pure State Non-zero Entropy Paradox

1 vote

Does non-conservation of number of particles imply zero chemical potential?

0 votes

Classical/Quantum Coin Toss

-1 votes

Why does the dipole moment depend on the distance?

-1 votes

Density of states in a system of interacting electrons