Wednesday, 9 September 2015

quantum mechanics - What's the influence due to the phase factor in state vector?


In the fundamental postulate of quantum mechanics (page 18), there exists a one-to-one correspondence like that:


closed quantum system  Hilbert space ; quantum state  a ray in Hilbert space 


but here the ray can carry some additional phase factor eiϕ? What's the observable influence due to the phase factor in state vector? I mean if you take inner product the redundant factor will disappear.




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