Recent content by abhinavd

You did not address the question of whether the energy is a function of time, and how it reconciles with the fact that it is a stationary state. So before going on to mixed states, let's answer the question for pure states, the eigenstates of the time dependent Hamiltonian.

What is the definition of energy for quantum systems with time dependent Hamiltonians? Is it the eigenvalue of the Hamiltonian? (The eigenvalue is, in general, time dependent). However, the eigenstates of the Hamiltonian (even if it is time dependent) are stationary states, and hence no...