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

Energy-momentum of non-free classical particle

  1. Jul 16, 2011 #1

    atyy

    User Avatar
    Science Advisor

    Let's discuss only classical fields and particles.

    For fields, E2=p2+m2 applies only if the field is free. In the presence of sources, we have to use the energy-momentum tensor.

    For particles, does E2=p2+m2 apply only when they are free, or does it work even if they are acted on by a force?
     
  2. jcsd
  3. Jul 16, 2011 #2
    The energy-momentum tensor has to be used for all forms of mass/energy that are in a force field.
     
  4. Jul 16, 2011 #3

    atyy

    User Avatar
    Science Advisor

    Thanks!
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Energy-momentum of non-free classical particle
Loading...