Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Why should there be CPT symmetry?

  1. Oct 23, 2011 #1
    A few of the books and magazines I have read talk about maintaining CPT symmetry, but I can't see why it should be the case. What is the evidence, theoretical or experimental, of CPT symmetry?
  2. jcsd
  3. Oct 23, 2011 #2


    User Avatar
    Science Advisor

    CPT invariance is a rigorous consequence of quantum field theory, assuming only locality and Lorentz invariance. The CPT Theorem is sometimes referred to as Lüder's Theorem. See for example Weinberg, Vol 1, p 245.
  4. Oct 23, 2011 #3
    From an experimental point of view, violations of CPT have been searched

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook