Recent content by amedeo_fisi

Thanks DrClaude, but I already know the result! How do you get that formula?

Hello everybody :D My question is: given the distribution of the canonical ensemble, how do we get the helmoltz free energy? I think we can't use A = U-TS because we don't know how to write S. So what's the solution? Thanks

Does the fact that there is a non zero transition probability between two states imply that the state of the system is a superposition of them?

What is meant by transition probability between two sates? Physically speaking.

So I conlude that there is a transition probability between the position eigenstates, does it have any sense? Does the probability transition have anything to do with time?

Hello everyone. Can someone explains me the meaning of quantum state transition? For example consider an electron which is in the superposition of two energy eigenstates of a given hamiltonian, now, if no one perturbs the state with a measure, nothing happens and the superposition remains the...

And what happen if the system is in the superposition of b1 and b2, say: |u> = a|b1> + c|b2>

I mean the hermitian product of two states. For example consider the hamiltonian eigenstates of the harmonic oscillator, what does it mean that the product of two different states is zero?

Hello everyone, I have thi doubt: If I have a state, say psi1, associated with the energy eigenvalue E1, the integral over a certain region gives me the probability of finding the particle in that region with the specified energy E1. Now if I put an operator between the states I obtain its mean...