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Unitary operator

  • Thread starter asi123
  • Start date
  • #1
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Homework Statement



Hey guys.

http://img397.imageshack.us/img397/7987/scan0001q.jpg [Broken]

I have this operator and I need to check if it's Unitary.
I checked the "length of vector preservation test" as you can see in the pic and I came up with that, that it does not keep the length of a vector.
Does that mean that it's not a Unitary operator?

Thanks.


Homework Equations





The Attempt at a Solution

 
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Answers and Replies

  • #2
Cyosis
Homework Helper
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This doesn't prove anything, because you're not doing your inner product correctly. What is the definition of the standard complex inner product for vectors? Secondly what is the definition of a unitary operator?
 

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