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Question about expectation value.by cragar
Tags: expectation 
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#1
Dec512, 06:34 AM

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It seems that the energy expectation value is independent of time.
I did it for an infinite square well. And when you time evolve your wave function the time evolution cancels when you complex conjugate it and then do the integral. <E>=<ψEψ> it seem like this might always independent of time, What do you guys think. I guess I could try to prove it in general. 


#2
Dec512, 08:04 AM

P: 184




#3
Dec512, 08:05 AM

Mentor
P: 11,925

If you have a timeindependent Hamiltonian, energy is always conserved in your system. This is a very fundamental result and it works both in classical and quantum mechanics.



#4
Dec512, 11:23 AM

P: 32

Question about expectation value.



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