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Calculate 2D matrix using the unitary group

  1. Apr 25, 2012 #1
    It's problem #5 on this homework set: https://docs.google.com/open?id=0B9c8sp75B5ZRMHAxYXB3MWdhYk0

    I can calculate ([itex]\pi[/itex]/4)(n1σ1 + n2σ2 + n3σ3) easily, but I have NO clue how a matrix M = exp[([itex]\pi[/itex]/4)(n1σ1 + n2σ2 + n3σ3)].
     
  2. jcsd
  3. Apr 25, 2012 #2
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