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

Integrating by parts Maxwell Lagrangian

  1. Feb 26, 2012 #1
    I attached a file that shows the free EM action integral and how it can be rewritten. I would like to know how to go from the first line to the second. I have to integrate by parts somehow, and I know surface terms get thrown out, but I do not know how the indices of the gauge fields should be handled.

    thanks for any help

    Attached Files:

  2. jcsd
  3. Feb 28, 2012 #2
    Has then perhaps anybody seen a text were it is derived?

    I got -A∂∂A + A∂∂A, and both terms upper indices for A∂ and lower indices for ∂A. But what now? How to get to the last line?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook