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

Add the Hermetian conjugate to make Lagrangian real

  1. Aug 16, 2015 #1
    How does adding a h.c. term make a Lagrangian real? Like here on page 99 (11.51)?

    thanks in advance
     
  2. jcsd
  3. Aug 16, 2015 #2

    mfb

    User Avatar
    2016 Award

    Staff: Mentor

    You add something with the same real part but with the negative imaginary part. The sum has an imaginary component of zero.

    ##z + \bar z## is always real (even if you replace z by more complex structures).
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Add the Hermetian conjugate to make Lagrangian real
Loading...