All Questions
3
questions
3
votes
1
answer
92
views
Hamiltonians with collective quantum spins and their ground states
This feels like it could be a undergrad/grad-school quantum mechanics course level problem, or potentially something pretty interesting. I'd be happy with either answer, but I don't know which one is ...
- 368
3
votes
1
answer
436
views
Are all gapless acoustic magnon modes essentially Goldstone modes?
We know gapless Goldstone mode appears when the system exhibits spontaneously symmetry broken. Does this means whenever we observe gapless acoustic modes it is Goldstone mode i.e. spontaneous symmetry ...
- 33
3
votes
2
answers
241
views
Do spins add when particles combine symmetrically?
Suppose I have three spin $s$ particles. What are the possible spins of a symmetric combination of these three particles? Will one of the states always have spin $3s$?
Perhaps the above question is ...
- 85