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

Index gymnastics of electromagnetism quantities

  1. Jul 1, 2014 #1
    This bothers me, and the question is simple:

    If am working with a non-minkowski metric g, when raising or lowering indexes of electromagnetism quantities, for example the electromagnetic tensor F, or the vector potential A, should I use my curved spacetime metric g or the minkowski metric n?
     
    Last edited: Jul 1, 2014
  2. jcsd
  3. Jul 1, 2014 #2

    bcrowell

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    The actual metric. The Minkowski metric is at best an approximation to the curved-spacetime metric.
     
  4. Jul 1, 2014 #3
    Thanks!
     
  5. Jul 2, 2014 #4

    WannabeNewton

    User Avatar
    Science Advisor

    Coordinate indices are raised and lowered with ##g## but tetrad indices are raised and lowered using ##\eta##, be it curved space-time or flat space-time.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Index gymnastics of electromagnetism quantities
  1. Defined quantities (Replies: 10)

  2. Invariant quantities (Replies: 7)

Loading...