Thanks for the link. I think my confusion arose because I'm used to thinking of the Hamiltonian in terms of the Schrodinger picture and have not gotten used to the Heisenberg formulation.
Hello,
Is it generally the case that [J, H] = dJ/dt?
I saw this appear in a problem involving a spin 1/2 system interacting with a magnetic field.
If so, why?This seems like a very basic relation but I'm having a bit of brain freeze and can't see the answer right now.