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Expectation value of a real scalar field in p state

  1. Apr 28, 2015 #1
    Hello,

    I've been trying to find <p'|φ(x)|p> for a free scalar field. and integral of <p'|φ(x)φ(x)|p> over 3d in doing the space
    In writing φ(x) as
    pkr1.gif
    In doing the first, I get the creation and annihilation operators acting on |p> giving |p+1> and |p-1> which are different from the bra state |p>
    which results in zero.

    I'm pretty sure I'm missing something
     
  2. jcsd
  3. May 3, 2015 #2
    Thanks for the post! This is an automated courtesy bump. Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?
     
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