1. Jan 29, 2015 #1

   befj0001

   

   Anyone having an idea of how to solve problem 3a) file:///C:/Users/Administrator/Downloads/handin1%20(2).pdf ?
   
   I've been stuck for a great while but have not idea.

    

   befj0001, Jan 29, 2015
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3. Jan 29, 2015 #2

   befj0001

   

   on part 3b) is it correct to argue that since you integrate away the x-dependence in the number operator that according to the heisenberg equation [H,N]=0 since both the partial derivative and total derivative of N is zero?

    

   befj0001, Jan 29, 2015
4. Jan 29, 2015 #3

   DEvens

   

   Education Advisor

   Gold Member

   You know, I'm having a great deal of difficulty reading that file. :w Maybe you could hold it up a little closer to *my* screen?

    

   DEvens, Jan 29, 2015
5. Jan 29, 2015 #4

   befj0001

   

   Why can't you read the file? file:///C:/Users/administrator/Downloads/handin1%20(2).pdf

    

   befj0001, Jan 29, 2015
6. Jan 30, 2015 #5

   DrClaude

   

   Staff: Mentor

   Because it's on your computer!

    

   DrClaude, Jan 30, 2015

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