1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Help quantum mechanics spin

  1. Mar 9, 2007 #1
    The spin of an electron is described by a vector
    spinor and the spin operator
    ^S = ^ Sxi + ^ Syj + ^ Szk with components


    how would i go about normalizing a state like the one below,i am miles away to what is going on here

    c) (i) Normalise the state (1 1) *this is meant to be a column vector*

    ii) calculate expectation values for <Sx> ,<Sy> and <Sz>


    Sx = h/2(0 1) Sy = h/2(0 -i ) Sz = h/2(1 0)
    (1 0) ( i 0 ) (0 -1)

    any help on this would be greatly appreciated.because being honest i am lost
    thanks:bugeye:
     
  2. jcsd
  3. Mar 9, 2007 #2

    Meir Achuz

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    You need a better text or some tutoring.
    You need more help than you can get here.
    Normalize means just make u^{dagger}u=1.
    Exp. value=u^{dagger}[s_x[u, using matrlix multiplication,
    with [s_x] a 2X2 matrix.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Help quantum mechanics spin
Loading...