Gently pushing a system away from thermal equilibrium

[@JonathonRiddell]

At 5:57 and 8:40 there is a slight mistake. The second exponential is missing i, so it should be e^{-i H_0 t}.

[@lookthesky9632]

I just felt when theoretical physicist explain physics is like interpret an art work. I can really appreciate the formula and meaning behind it. You are really a guider to physics.

[@JonathonRiddell]

Thanks! That's a nice compliment :)