- #1
J.Asher
- 12
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Hello, I am planning to talk about the entanglement for the presentation but now I am a bit confused of between entanglement and many-particle system. Actually, I have only studied two-particle system when dealing the total angular momentum. let me assume that there are a photon and an electron then the total angular momentum might be 3/2. So the possible states describing the system would be |3/2, 3/2>, |3/2,1/2>, |3/2, -1/2>, |3/2, -3/2>, |1/2, 1/2>, |1/2, -1/2>. Here, for example if I write down |3/2, 1/2> in terms of the production states of particle 1 and 2, I can say c_1|1,1>|1/2,-1/2> + c_2|1,0>|1/2,1/2> (c_1 and c_2 are normalized constants). If I write down again nicely :D
|3/2,1/2> = c_1|1,1>|1/2,-1/2> + c_2|1,0>|1/2,1/2>.
But it look totally the same as the wave function of the entangled system.
So can I say that If I measure 1h/2pi by operating z component momentum upon photon, then it is obviously the electron lies on the state |1/2, -1/2> ... ?
Or is it impossible to operate the momentum operator of particle 1 or 2 upon this |3/2,1/2>.
(Actually, I am also confused of meaning of |3/2,1/2>, what exactly does is says...?)
Thx for reading.
|3/2,1/2> = c_1|1,1>|1/2,-1/2> + c_2|1,0>|1/2,1/2>.
But it look totally the same as the wave function of the entangled system.
So can I say that If I measure 1h/2pi by operating z component momentum upon photon, then it is obviously the electron lies on the state |1/2, -1/2> ... ?
Or is it impossible to operate the momentum operator of particle 1 or 2 upon this |3/2,1/2>.
(Actually, I am also confused of meaning of |3/2,1/2>, what exactly does is says...?)
Thx for reading.