- #1
physics2004
- 25
- 0
find the following:
if a particle (s=1/2) is prepared such that it is in the spin up state |f>=|z+>
what do the following mean? [<f|(Sz - <z+|Sz|f>1)^2|f>]^½ and
[<f|(Sx - <f|Sx|f>1)^2|f>]^½
The middle term sandwiched between the states is squared and the whole term being square rooted.
my guess: For the first one the measurement is repeated knowing the particle is in state |z>, you measure Sz- (which should be zero, but that's not what iam getting) so iam kind of lost.
if a particle (s=1/2) is prepared such that it is in the spin up state |f>=|z+>
what do the following mean? [<f|(Sz - <z+|Sz|f>1)^2|f>]^½ and
[<f|(Sx - <f|Sx|f>1)^2|f>]^½
The middle term sandwiched between the states is squared and the whole term being square rooted.
my guess: For the first one the measurement is repeated knowing the particle is in state |z>, you measure Sz- (which should be zero, but that's not what iam getting) so iam kind of lost.